diff --git a/1000-hours/sounds-of-american-english/2.2.6-sz.md b/1000-hours/sounds-of-american-english/2.2.6-sz.md
index 780863bc..d32fe38a 100644
--- a/1000-hours/sounds-of-american-english/2.2.6-sz.md
+++ b/1000-hours/sounds-of-american-english/2.2.6-sz.md
@@ -6,9 +6,13 @@ The s/z sounds don't really pose a challenge for most p
-需要注意的是，s 之后的 p/t/tr/k 会被浊化，相应读成 b/d/dr/g（但是，音标标注却保持原样）：
+中文里当然也有 s 这个音，但，中文里的 s 在发音时舌尖起始位置更接近下排牙齿，即，比位置 ② 更低一些 —— 虽然听不出什么区别。但，中国人要新练一个 s，否则，说英文时经常遇到更费力的情况，比如，在说 st 这个组合的时候 —— 这恰好也是因文中使用频率相当高的一个组合。
-It's important to note that following an s, p/t/tr/k are voiced, meaning they are pronounced like b/d/dr/g respectively, while the phonetic annotations remain unchanged.
+Of course, the sound s exists in Chinese as well, but when you pronounce it, the tip of your tongue starts closer to the lower teeth—slightly lower than position ②, even though you can't really hear the difference. However, for Chinese speakers, it's necessary to practice a new s sound to make speaking English less strenuous, especially when saying combinations like st — which happens to be a very common combination in English.
+
+另外，需要注意的是，s 之后的 p/t/tr/k 作为音节开头时会被浊化（比如，音节末尾的 st 中的 t 不会被浊化），相应读成 b/d/dr/g（但是，音标标注却保持原样）：
+
+Also, it's important to note that, following an s that starts a syllable, p/t/tr/k are voiced, meaning they are pronounced like b/d/dr/g respectively, while the phonetic annotations remain unchanged. However, this rule doesn't apply when these consonants are at the end of a syllable, like the t in st:
> * *speak* spiːk → sbiːk
> * *student* ˈstudənt → ˈsdudənt
@@ -17,4 +21,4 @@ It's important to note that following an s, f/v、s/z、ʃ 是可以拉长的，尤其是 s/z。
-In addition, in English, there's no differentiation between long and short consonant sounds. This is a feature found in some languages but is generally not present in Asian languages. However, in English, the sounds of f/v, s/z, and ʃ can be lengthened, especially s/z.
\ No newline at end of file
+In addition, in English, there's no differentiation between long and short consonant sounds. This is a feature found in some languages but is generally not present in Asian languages. However, in English, the sounds of f/v, s/z, and ʃ can be lengthened, especially s/z.