diff --git a/1000-hours/public/audios/us/focus-us-female.mp3 b/1000-hours/public/audios/us/focus-us-female.mp3
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index 00000000..50c54f1a
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diff --git a/1000-hours/public/audios/us/focus-us-male.mp3 b/1000-hours/public/audios/us/focus-us-male.mp3
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index 00000000..9b3c8e81
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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 5d721dbc..5640e6a9 100644
--- a/1000-hours/public/jupyter-notebooks/edge-tts-valcab-pronounciation.ipynb
+++ b/1000-hours/public/jupyter-notebooks/edge-tts-valcab-pronounciation.ipynb
@@ -14,7 +14,7 @@
},
{
"cell_type": "code",
- "execution_count": 1,
+ "execution_count": 2,
"id": "77deb08f-fec3-4327-b2f9-1c893aacaddc",
"metadata": {
"collapsed": true,
@@ -161,7 +161,7 @@
},
{
"cell_type": "code",
- "execution_count": 4,
+ "execution_count": 3,
"id": "00939422-fbf9-4842-b82a-b6106624c075",
"metadata": {},
"outputs": [
@@ -197,7 +197,7 @@
},
{
"cell_type": "code",
- "execution_count": 3,
+ "execution_count": 4,
"id": "cecefa85-b37d-457e-9e99-e582dabdfb9f",
"metadata": {},
"outputs": [
@@ -216,7 +216,7 @@
"import edge_tts\n",
"import pygame\n",
"\n",
- "TEXT = \"accommodate,anniversary,anticipate,appreciate,beautiful,celebration,characteristic,communication,determination,discovery,encouragement,entrepreneur,environment,exaggerate,examination,explanation,fascinating,government,hospitality,imagination,impossible,incredible,independent,information,inspiration,interesting,international,knowledgeable,opportunity,personality,photography,professional,recognition,rehabilitation,relationship,responsibility,revolutionary,satisfaction,spectacular,temperature,transportation,unbelievable,understand,understanding,unforgettable,university,vegetarian,vocabulary,vulnerable,wonderfully\"\n",
+ "TEXT = \"focus\"\n",
"Wordlist = TEXT.split(\",\")\n",
"\n",
"for w in Wordlist:\n",
diff --git a/1000-hours/public/jupyter-notebooks/focus-us-female.mp3 b/1000-hours/public/jupyter-notebooks/focus-us-female.mp3
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index 00000000..50c54f1a
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diff --git a/1000-hours/public/jupyter-notebooks/focus-us-male.mp3 b/1000-hours/public/jupyter-notebooks/focus-us-male.mp3
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index 00000000..9b3c8e81
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diff --git a/1000-hours/public/jupyter-notebooks/hands-us-female.mp3 b/1000-hours/public/jupyter-notebooks/hands-us-female.mp3
new file mode 100644
index 00000000..b3b96f6f
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diff --git a/1000-hours/public/jupyter-notebooks/hands-us-guyneural.mp3 b/1000-hours/public/jupyter-notebooks/hands-us-guyneural.mp3
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index 00000000..762dcf75
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diff --git a/1000-hours/sounds-of-american-english/2.1.5-ə.md b/1000-hours/sounds-of-american-english/2.1.5-ə.md
index e073a10e..23985ea3 100644
--- a/1000-hours/sounds-of-american-english/2.1.5-ə.md
+++ b/1000-hours/sounds-of-american-english/2.1.5-ə.md
@@ -4,9 +4,9 @@
In American English, there are three versions of the sound ə, including the schwa ə, which is used in unstressed syllables, the rhotacized short vowel ɚ, and the rhotacized long vowel ɝː.
-初学者容易矫枉过正，遇到所有的 ə 都要读成儿化音…… 比如，可能会把 *focus* 错读成 ˈfoʊkɚs。
+初学者容易矫枉过正，遇到所有的 ə 都要读成儿化音…… 比如，可能会把 *focus* ˈfoʊkəs 错读成 ˈfoʊkɚs。
-Beginners tend to overdo it and add a r whenever they encounter these sounds, for example, mispronouncing *focus* as ˈfoʊkɚs.
+Beginners tend to overdo it and add a r whenever they encounter these sounds, for example, mispronouncing *focus* ˈfoʊkəs as ˈfoʊkɚs.
ɚ 和 ɝː 这两个儿化音，有两种发声方式，一种是凭直觉卷起舌尖，这也是绝大多数初学者发这个音的唯一选择。