diff --git a/1000-hours/sounds-of-american-english/1.2-phonetics-us.md b/1000-hours/sounds-of-american-english/1.2-phonetics-us.md
index 220798c7..a91da142 100644
--- a/1000-hours/sounds-of-american-english/1.2-phonetics-us.md
+++ b/1000-hours/sounds-of-american-english/1.2-phonetics-us.md
@@ -14,30 +14,30 @@
 
 ## 元音
 
-| Phonemes | Examples                                                                                                                                                                        |
-| -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `ʌ`      | c**u**p `/kʌp /` <span class="speak-word-inline" data-audio-us-male="/audios/us/cup-en-us-male.mp3" data-audio-us-female="/audios/us/cup-en-us-female.mp3"></span>              |
-| `ɑː`     | f**a**ther `/ˈfɑː·ðɚ /` <span class="speak-word-inline" data-audio-us-male="/audios/us/father-en-us-male.mp3" data-audio-us-female="/audios/us/father-en-us-female.mp3"></span> |
-| `e`      | h**ea**d `/hed /` <span class="speak-word-inline" data-audio-us-male="/audios/us/head-en-us-male.mp3" data-audio-us-female="/audios/us/head-en-us-female.mp3"></span>           |
-| `æ`      | h**a**t `/hæt /` <span class="speak-word-inline" data-audio-us-male="/audios/us/hat-en-us-male.mp3" data-audio-us-female="/audios/us/hat-en-us-female.mp3"></span>              |
-| `ə`      | **a**bove `/əˈbʌv /` <span class="speak-word-inline" data-audio-us-male="/audios/us/above-en-us-male.mp3" data-audio-us-female="/audios/us/above-en-us-female.mp3"></span>      |
-| `ɚ`      | moth**er** `/ˈmʌð·ɚ /` <span class="speak-word-inline" data-audio-us-male="/audios/us/mother-en-us-male.mp3" data-audio-us-female="/audios/us/mother-en-us-female.mp3"></span>  |
-| `ɝː`     | b**ir**d `/bɝːd /` <span class="speak-word-inline" data-audio-us-male="/audios/us/bird-en-us-male.mp3" data-audio-us-female="/audios/us/bird-en-us-female.mp3"></span>          |
-| `iː`     | sh**ee**p `/ʃiːp /` <span class="speak-word-inline" data-audio-us-male="/audios/us/sheep-en-us-male.mp3" data-audio-us-female="/audios/us/sheep-en-us-female.mp3"></span>       |
-| `ɪ`      | sh**i**p `/ʃɪp /` <span class="speak-word-inline" data-audio-us-male="/audios/us/ship-en-us-male.mp3" data-audio-us-female="/audios/us/ship-en-us-female.mp3"></span>           |
-| `ɔː`     | h**or**se `/hɔːrs /` <span class="speak-word-inline" data-audio-us-male="/audios/us/horse-en-us-male.mp3" data-audio-us-female="/audios/us/horse-en-us-female.mp3"></span>      |
-| `uː`     | bl**ue** `/bluː /` <span class="speak-word-inline" data-audio-us-male="/audios/us/blue-en-us-male.mp3" data-audio-us-female="/audios/us/blue-en-us-female.mp3"></span>          |
-| `ʊ`      | f**oo**t `/fʊt /` <span class="speak-word-inline" data-audio-us-male="/audios/us/foot-en-us-male.mp3" data-audio-us-female="/audios/us/foot-en-us-female.mp3"></span>           |
-| `eɪ`     | d**ay** `/deɪ /` <span class="speak-word-inline" data-audio-us-male="/audios/us/day-en-us-male.mp3" data-audio-us-female="/audios/us/day-en-us-female.mp3"></span>              |
-| `aɪ`     | **eye** `/aɪ /` <span class="speak-word-inline" data-audio-us-male="/audios/us/eye-en-us-male.mp3" data-audio-us-female="/audios/us/eye-en-us-female.mp3"></span>               |
-| `ɔɪ`     | b**oy** `/bɔɪ /` <span class="speak-word-inline" data-audio-us-male="/audios/us/boy-en-us-male.mp3" data-audio-us-female="/audios/us/boy-en-us-female.mp3"></span>              |
-| `oʊ`     | n**o**se `/noʊz /` <span class="speak-word-inline" data-audio-us-male="/audios/us/nose-en-us-male.mp3" data-audio-us-female="/audios/us/nose-en-us-female.mp3"></span>          |
-| `aʊ`     | m**ou**th `/maʊθ /` <span class="speak-word-inline" data-audio-us-male="/audios/us/mouth-en-us-male.mp3" data-audio-us-female="/audios/us/mouth-en-us-female.mp3"></span>       |
-| `ɪr`     | ear `/ɪr /` <span class="speak-word-inline" data-audio-us-male="/audios/us/ear-en-us-male.mp3" data-audio-us-female="/audios/us/ear-en-us-female.mp3"></span>                   |
-| `er`     | h**air** `/her /` <span class="speak-word-inline" data-audio-us-male="/audios/us/hair-en-us-male.mp3" data-audio-us-female="/audios/us/hair-en-us-female.mp3"></span>           |
-| `ʊr`     | p**ure** `/pjʊr /` <span class="speak-word-inline" data-audio-us-male="/audios/us/pure-en-us-male.mp3" data-audio-us-female="/audios/us/pure-en-us-female.mp3"></span>          |
-| `aɪr`    | f**ire** `/faɪr /` <span class="speak-word-inline" data-audio-us-male="/audios/us/fire-en-us-male.mp3" data-audio-us-female="/audios/us/fire-en-us-female.mp3"></span>          |
-| `aʊr`    | hour `/aʊr/` <span class="speak-word-inline" data-audio-us-male="/audios/us/hour-en-us-male.mp3" data-audio-us-female="/audios/us/hour-en-us-female.mp3"></span>                |
+| Phonemes | Examples                                                                                                                                                                       |
+| -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| `ʌ`      | c**u**p `/kʌp/` <span class="speak-word-inline" data-audio-us-male="/audios/us/cup-en-us-male.mp3" data-audio-us-female="/audios/us/cup-en-us-female.mp3"></span>              |
+| `ɑː`     | f**a**ther `/ˈfɑː·ðɚ/` <span class="speak-word-inline" data-audio-us-male="/audios/us/father-en-us-male.mp3" data-audio-us-female="/audios/us/father-en-us-female.mp3"></span> |
+| `e`      | h**ea**d `/hed/` <span class="speak-word-inline" data-audio-us-male="/audios/us/head-en-us-male.mp3" data-audio-us-female="/audios/us/head-en-us-female.mp3"></span>           |
+| `æ`      | h**a**t `/hæt/` <span class="speak-word-inline" data-audio-us-male="/audios/us/hat-en-us-male.mp3" data-audio-us-female="/audios/us/hat-en-us-female.mp3"></span>              |
+| `ə`      | **a**bove `/əˈbʌv/` <span class="speak-word-inline" data-audio-us-male="/audios/us/above-en-us-male.mp3" data-audio-us-female="/audios/us/above-en-us-female.mp3"></span>      |
+| `ɚ`      | moth**er** `/ˈmʌð·ɚ/` <span class="speak-word-inline" data-audio-us-male="/audios/us/mother-en-us-male.mp3" data-audio-us-female="/audios/us/mother-en-us-female.mp3"></span>  |
+| `ɝː`     | b**ir**d `/bɝːd/` <span class="speak-word-inline" data-audio-us-male="/audios/us/bird-en-us-male.mp3" data-audio-us-female="/audios/us/bird-en-us-female.mp3"></span>          |
+| `iː`     | sh**ee**p `/ʃiːp/` <span class="speak-word-inline" data-audio-us-male="/audios/us/sheep-en-us-male.mp3" data-audio-us-female="/audios/us/sheep-en-us-female.mp3"></span>       |
+| `ɪ`      | sh**i**p `/ʃɪp/` <span class="speak-word-inline" data-audio-us-male="/audios/us/ship-en-us-male.mp3" data-audio-us-female="/audios/us/ship-en-us-female.mp3"></span>           |
+| `ɔː`     | h**or**se `/hɔːrs/` <span class="speak-word-inline" data-audio-us-male="/audios/us/horse-en-us-male.mp3" data-audio-us-female="/audios/us/horse-en-us-female.mp3"></span>      |
+| `uː`     | bl**ue** `/bluː/` <span class="speak-word-inline" data-audio-us-male="/audios/us/blue-en-us-male.mp3" data-audio-us-female="/audios/us/blue-en-us-female.mp3"></span>          |
+| `ʊ`      | f**oo**t `/fʊt/` <span class="speak-word-inline" data-audio-us-male="/audios/us/foot-en-us-male.mp3" data-audio-us-female="/audios/us/foot-en-us-female.mp3"></span>           |
+| `eɪ`     | d**ay** `/deɪ/` <span class="speak-word-inline" data-audio-us-male="/audios/us/day-en-us-male.mp3" data-audio-us-female="/audios/us/day-en-us-female.mp3"></span>              |
+| `aɪ`     | **eye** `/aɪ/` <span class="speak-word-inline" data-audio-us-male="/audios/us/eye-en-us-male.mp3" data-audio-us-female="/audios/us/eye-en-us-female.mp3"></span>               |
+| `ɔɪ`     | b**oy** `/bɔɪ/` <span class="speak-word-inline" data-audio-us-male="/audios/us/boy-en-us-male.mp3" data-audio-us-female="/audios/us/boy-en-us-female.mp3"></span>              |
+| `oʊ`     | n**o**se `/noʊz/` <span class="speak-word-inline" data-audio-us-male="/audios/us/nose-en-us-male.mp3" data-audio-us-female="/audios/us/nose-en-us-female.mp3"></span>          |
+| `aʊ`     | m**ou**th `/maʊθ/` <span class="speak-word-inline" data-audio-us-male="/audios/us/mouth-en-us-male.mp3" data-audio-us-female="/audios/us/mouth-en-us-female.mp3"></span>       |
+| `ɪr`     | ear `/ɪr/` <span class="speak-word-inline" data-audio-us-male="/audios/us/ear-en-us-male.mp3" data-audio-us-female="/audios/us/ear-en-us-female.mp3"></span>                   |
+| `er`     | h**air** `/her/` <span class="speak-word-inline" data-audio-us-male="/audios/us/hair-en-us-male.mp3" data-audio-us-female="/audios/us/hair-en-us-female.mp3"></span>           |
+| `ʊr`     | p**ure** `/pjʊr/` <span class="speak-word-inline" data-audio-us-male="/audios/us/pure-en-us-male.mp3" data-audio-us-female="/audios/us/pure-en-us-female.mp3"></span>          |
+| `aɪr`    | f**ire** `/faɪr/` <span class="speak-word-inline" data-audio-us-male="/audios/us/fire-en-us-male.mp3" data-audio-us-female="/audios/us/fire-en-us-female.mp3"></span>          |
+| `aʊr`    | hour `/aʊr/` <span class="speak-word-inline" data-audio-us-male="/audios/us/hour-en-us-male.mp3" data-audio-us-female="/audios/us/hour-en-us-female.mp3"></span>               |
 
 ## 辅音