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1000-hours/sounds-of-american-english/3.2.14-lr.md

@@ -16,6 +16,14 @@ Pronouncing 'l' and 'r' at the beginning of syllables usually is of no difficult
 
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+有一个重要的细节：
+
+Here's an important detail to note:
+
+> 美式英语中，`r` 发声的时候，舌尖**从不接触**龈脊，只是非常接近龈脊。
+
+In American English, when pronouncing the `r` sound, the tip of the tongue *never* actually touches the *alveolar ridge*, but comes very close to it.
+
 `l` 的困难总是来自于它们处在音节末尾的时候。
 
 The difficulty with 'l' often arises when it's at the end of a syllable.