diff --git a/1000-hours/sounds-of-american-english/2.1.10-ɤ.md b/1000-hours/sounds-of-american-english/2.1.10-ɤ.md
index b6a179a1..7d380998 100644
--- a/1000-hours/sounds-of-american-english/2.1.10-ɤ.md
+++ b/1000-hours/sounds-of-american-english/2.1.10-ɤ.md
@@ -8,6 +8,6 @@ Human speech, at its core, is universal - the clearest example being that all la
Even though the phonetic symbol ɤ isn't included in English phonetic chart, you'll notice something interesting if you try it out: the letter d is actually pronounced as dɤ, and g is pronounced as gɤ. Here, the ɤ sound is very light and brief. Similarly, t is actually pronounced as tɤ, and k is pronounced as kɤ, with the ɤ not involving any airflow vibration.
-之前讲过，非重音音节里的元音可能会被弱化为 *schwa*（[2.1.5-ə](2.1.5-ə)）ə…… 在自然语流中，连 *schwa* ə 都可能会被进一步弱化,变成非常轻的 ɤ。比如，常用词 *reasonable*，字典里标注的当然是 ˈriːzənəbəl，实际听到的常常是 ˈriːzɤnəbəl —— "*so*" 这个音节的发音不是 zə……
+之前讲过，非重音音节里的元音可能会被弱化为 *schwa*（[2.1.5-ə](2.1.5-ə)）ə…… 在自然语流中，连 *schwa* ə 都可能会被进一步弱化,变成非常轻的 ɤ。比如，常用词 *reasonable*，字典里标注的当然是 ˈriːzənəbəl，实际听到的常常是 ˈriːzɤnəbəl —— "*so*" 这个音节的发音不是 zə，而是 zɤ 甚至 z……
-Previously, we discussed that vowels in unstressed syllables might be reduced to a *schwa* ə ([2.1.5-ə](2.1.5-ə)). In natural speech, even the *schwa* ə can be further weakened to a very light ɤ. For example, take the common word *reasonable*. The dictionary may mark it as ˈriːzənəbəl, but in real-life conversations, you often hear it pronounced as ˈriːzɤnəbəl. This means the syllable "*so*" sounds more like ɤ rather than zə.
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+Previously, we discussed that vowels in unstressed syllables might be reduced to a *schwa* ə ([2.1.5-ə](2.1.5-ə)). In natural speech, even the *schwa* ə can be further weakened to a very light ɤ. For example, take the common word *reasonable*. The dictionary may mark it as ˈriːzənəbəl, but in real-life conversations, you often hear it pronounced as ˈriːzɤnəbəl. This means the syllable "*so*" sounds more like zɤ or even z, rather than zə.
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