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--- a/1000-hours/sounds-of-american-english/2.4.2-cv.md
+++ b/1000-hours/sounds-of-american-english/2.4.2-cv.md
@@ -1,10 +1,10 @@
# 2.4.2 辅音 + 元音（Consonant + Vowel）
-在词汇内部，“辅音 + 元音” 当然可以构成一个音节；在同一个**意群**（meaning group）中，如果**以辅音结尾的词汇**遇到**以元音开头的词汇**的话，那么前一个词末尾的**辅音**和后一个词开头的**元音**很可能会连起来读，听起来构成一个**音节**，这种方式叫做**连读**。
+在词汇内部，“辅音 + 元音” 当然可以构成一个音节；在同一个**意群**（thought group）中，如果**以辅音结尾的词汇**遇到**以元音开头的词汇**的话，那么前一个词末尾的**辅音**和后一个词开头的**元音**很可能会连起来读，听起来构成一个**音节**，这种方式叫做**连读**。
-A syllable can be formed by a "consonant + vowel" combination within a word. Within the same *meaning group*, if a word *ending in a consonant* meets a word *beginning with a vowel*, the final consonant of the first word and the initial vowel of the second word *may well* blend together when spoken, sounding as if they form a single *syllable*, which is often referred to as *linking*.
+A syllable can be formed by a "consonant + vowel" combination within a word. Within the same *thought group*, if a word *ending in a consonant* meets a word *beginning with a vowel*, the final consonant of the first word and the initial vowel of the second word *may well* blend together when spoken, sounding as if they form a single *syllable*, which is often referred to as *linking*.
-比如在 *People's opinions vary from individual to individual.* 在这句话中，*People's* 末尾的 `z` 和 *opinions* 开头的 `ə` 会连在一起，`/pi-pəl-zə-ˈpɪ-njənz/` —— 感觉上是在读一整个由 *5* 个音节构成的词汇一样……
+比如在 *People's opinions vary from individual to individual.* 在这句话中，*People's* 末尾的 `z` 和 *opinions* 开头的 `ə` 会连在一起，`/piː·pəl·zə·ˈpɪ·njənz/` —— 感觉上是在读一整个由 *5* 个音节构成的词汇一样……
For instance, when saying *People's opinions vary from individual to individual*, the `s` at the end of *People's* and the `ə` at the start of *opinions* seamlessly connect, making it sound like a five-syllable word: /pi-pəl-zə-ˈpɪ-njənz/. It feels as if you're pronouncing a single, lengthy word.
@@ -18,12 +18,24 @@ It is previously mentioned that in American English, the `t` sound has a unique
在自然语流里，同一个意群中，经常会出现以 `t` 结尾的词汇后面跟着一个以元音开头的词汇，并且，`t` 的前面是元音的概率也很高，所以，词汇之间出现 `t` 的浊化弹舌音 `t̬` 的情况非常普遍。比如，*Get it done.* `/ɡet̬ ɪt dʌn/`
-In natural speech flow, it's common to find a word ending with `t` closely followed by a word beginning with a vowel within the same meaning group. Furthermore, there's a high possibility that the `t` is preceded by a vowel. Therefore, the occurrence of the flapped `t̬` between words is incredibly prevalent. For example: *Get it done.* `/ɡet̬ ɪt dʌn/`
+In natural speech flow, it's common to find a word ending with `t` closely followed by a word beginning with a vowel within the same thought group. Furthermore, there's a high possibility that the `t` is preceded by a vowel. Therefore, the occurrence of the flapped `t̬` between words is incredibly prevalent. For example: *Get it done.* `/ɡet̬ ɪt dʌn/`
`l` 构成的连读，对绝大多数人来说，难点在于，如果前一个单词末尾的 `l` **舌尖动作不够完整**的话（即，结束的时候舌尖没有贴到龈脊）那么，`l` 这个弹舌音就发不出来，无法与后面的元音连上…… 尤其是在没有纠正掉用嘴唇动作替代舌尖动作的错误（乃至于有 `ʊ` 的音色）的情况下。
The challenge of linked speech involving `l` lies in the tongue's movement. If the tip of the tongue does not make complete contact with the roof of the mouth at the end of a word ending in `l`, it's difficult to produce the appropriate sound for the subsequent flapping `l` with the following vowel. This is especially true if the habit of substituting the movement of the lips for the action of the tongue hasn't been corrected, leading to a sound colored by `ʊ`.
+请仔细听一遍以下的录音，注意所有以 `l` 作为末尾的音节：
+
+Please listen carefully to the following recording, pay special attention to words ending with `l`:
+
+> Whether the *goal of* an insurgency has been to establish the Christian religion in the days of the Roman Empire, to create an interstate commerce commission in nineteenth-century America, or to promote civil rights for minorities in the twentieth century, what a *successful insurgency* does in *institutional or* process terms is to change the incentives and constraints facing others, as well as the incentives and constraints facing themselves and their successors.[^1]
+
+在以上这段录音中，*goal~of*, *successful~insurgency*, *as well~as*, 都有前一个单词末尾的 `l` 与后一个单词开头的元音之间轻微的连读。但，*institutional or* 之间却没有 —— 因为这两个词汇实际上分别属于前后不同的意群。
+
+In the audio clip above, the phrase *goal~of*, *successful~insurgency*, and *as well~as* all exhibit slight linking between the ending `l` of the first word and the vowel at the beginning of the following word. However, there's no such linking between *institutional* and *or*. That's because these two words belong to separate thought groups.
+
初学者容易矫枉过正，想把一切自己遇到的词汇间 “辅音 + 元音” 的组合连起来读…… 请注意，是**很可能**连起来读，但**并不一定**。首先，这多少与个人讲话的习惯有关。更为重要的是，讲话的时候要划分**意群**，意群之间要有**暂停**（*pause*）—— 前一个意群末尾的辅音和下一个意群开头的元音，不应该连读。
Beginners often overcorrect when learning English, trying to merge all "consonant + vowel" combinations they encounter. Remember, it's *possible* to connect sounds, but it's not always *necessary*. This largely depends on personal speaking habits. More importantly, when speaking, one should divide their speech into *thought groups*, pausing between each group. Do not blend the ending consonant of one thought group with the beginning vowel of the next.
+
+[^1]: This audio clip is extracted from the Audible edition of Knowledge and Decisions by Thomas Sowell.