diff --git a/1000-hours/public/jupyter-notebooks/edge-tts-valcab-pronounciation.ipynb b/1000-hours/public/jupyter-notebooks/edge-tts-valcab-pronounciation.ipynb
index fe54502c..949c4c14 100644
--- a/1000-hours/public/jupyter-notebooks/edge-tts-valcab-pronounciation.ipynb
+++ b/1000-hours/public/jupyter-notebooks/edge-tts-valcab-pronounciation.ipynb
@@ -41,8 +41,8 @@
}
],
"source": [
- "!pip install edge-tts\n",
- "!pip install pygame"
+ "%pip install edge-tts\n",
+ "%pip install pygame"
]
},
{
diff --git a/1000-hours/public/videos/literally.mp4 b/1000-hours/public/videos/literally.mp4
new file mode 100644
index 00000000..86b89aab
Binary files /dev/null and b/1000-hours/public/videos/literally.mp4 differ
diff --git a/1000-hours/sounds-of-american-english/2.1.2-tongue.md b/1000-hours/sounds-of-american-english/2.1.2-tongue.md
index 4329e2d8..9417bbd9 100644
--- a/1000-hours/sounds-of-american-english/2.1.2-tongue.md
+++ b/1000-hours/sounds-of-american-english/2.1.2-tongue.md
@@ -24,5 +24,11 @@ Here's a 3D illustration showcasing the activity of articulators when pronouncin
Fortunately, when practicing American pronunciation, there's only one situation where we need to actively control and practice the position of the vocal cords - the r-colored vowel sound in ə (represented as ɚ and ɝː). Please refer to section [2.1.5](2.1.5-ə) for more information.
+另外，iOS 上有一个 APP，[The Phonetics 3D](https://apps.apple.com/us/app/the-phonetics-3d/id841485989)，一个日本人做的软件，$7.99 的价格，可以看到每个单词朗读时口腔内部的活动情况，很是实用：
+
+Additionally, there's an app on iOS called [The Phonetics 3D](https://apps.apple.com/us/app/the-phonetics-3d/id841485989), created by a Japanese developer, priced at $7.99, and it allows you to see the movements inside the mouth when pronouncing each word, being extremely helpful.
+
+
+
[^1]: Figure adapted from *FUNDAMENTALS OF PHONETICS: a practical guide for students* 5th Edition, by Larry H. Small, 2019. Page 55
[^2]: https://www.youtube.com/watch?v=wYwk07QM4rc
\ No newline at end of file
diff --git a/1000-hours/sounds-of-american-english/2.2-consonants.md b/1000-hours/sounds-of-american-english/2.2-consonants.md
index b57e590b..768bfe5d 100644
--- a/1000-hours/sounds-of-american-english/2.2-consonants.md
+++ b/1000-hours/sounds-of-american-english/2.2-consonants.md
@@ -1,5 +1,10 @@
# 2.2. 辅音（Consonants）
-地球上的所有语言都一样，在自然语流中，**辅音**不会单独存在。单独的**元音**，可以构成**音节**，也可以构成或者表达意义。比如，*ah* ɑː, *oh* oʊ，或者 *Uh-Oh* ˈʌoʊ。但，绝大多数**辅音**必须依附于**元音**才能构成**音节**，并且，单独的辅音也不能构成意义。
+地球上的所有语言都一样，在自然语流中，**辅音**不会单独存在。单独的**元音**，可以构成**音节**，也可以构成或者表达意义。比如，*ah* ɑː, *oh* oʊ，或者 *Uh-Oh* ˈʌoʊ。但，绝大多数**辅音**必须依附于**元音**才能构成**音节**[^1]，并且，单独的辅音也不能构成意义。
-All languages on Earth follow a similar pattern: in the flow of natural speech, consonants *never* stand alone. Isolated vowels, however, can form syllables and convey meaning. For instance, you have sounds like *ah* ɑː, *oh* oʊ, or *O'Oh* ˈɑoʊ. But consonants almost always need to be attached to vowels to form *syllables*, and alone, they don't carry meaning.
\ No newline at end of file
+All languages on Earth follow a similar pattern: in the flow of natural speech, consonants *never* stand alone. Isolated vowels, however, can form syllables and convey meaning. For instance, you have sounds like *ah* ɑː, *oh* oʊ, or *O'Oh* ˈɑoʊ. But consonants almost always need to be attached to vowels to form *syllables*, and alone, they don't carry meaning.
+
+注意：有三个辅音，l, m, n，被称作 “音节辅音”，因为它们自带 ə 的音色。比如，*bottle* ˈbɑːtl, *bottom* ˈbɑːtm, button ˈbʌtn。有些词典会用 ᵊ，比如写成：
+*bottle* ˈbɑːtᵊl, *bottom* ˈbɑːtᵊm, button ˈbʌtᵊn。剑桥词典的标注方式是：*bottle* ˈbɑːt̬əl, *bottom* ˈbɑːt̬əm, button ˈbʌtən……
+
+Please note, in English, there are three consonants—l, m, and n—that can act as "syllabic consonants." This means they carry a vocalic quality similar to the schwa sound (ə). For instance, in words like *bottle* (ˈbɑːtl), *bottom* (ˈbɑːtm), and *button* (ˈbʌtn), you can hear this quality. Some dictionaries use the symbol ᵊ to indicate this sound, rendering the words as follows: *bottle* (ˈbɑːtᵊl), *bottom* (ˈbɑːtᵊm), *button* (ˈbʌtᵊn). The Cambridge Dictionary, however, uses a slightly different notation: *bottle* (ˈbɑːt̬əl), *bottom* (ˈbɑːt̬əm), *button* (ˈbʌtən).
diff --git a/1000-hours/sounds-of-american-english/2.3.1-structure.md b/1000-hours/sounds-of-american-english/2.3.1-structure.md
index 944a1d5c..17738b03 100644
--- a/1000-hours/sounds-of-american-english/2.3.1-structure.md
+++ b/1000-hours/sounds-of-american-english/2.3.1-structure.md
@@ -12,6 +12,8 @@ In a syllable, there is *only* one vowel, known as the *nucleus*, which forms th
英文的音节构成大抵上有以下几种形式（其中，c 代表辅音，v 代表元音）：
+In English, syllables can generally be made up of the following patterns (where c stands for consonant and v stands for vowel):
+
> * v - *awe* ɑː
> * vc - *add* æd
> * vcc - *east* iːst
@@ -27,4 +29,4 @@ In a syllable, there is *only* one vowel, known as the *nucleus*, which forms th
> * cccv - *spray* spreɪ
> * cccvc - *spring* sprɪŋ
> * cccvcc - *splashed* splæʃt
-> * cccvccc - *scrounged* skraʊndʒd
\ No newline at end of file
+> * cccvccc - *scrounged* skraʊndʒd