今天看到社群内小伙伴分享这样一句话：
count这个词，必须分享这句话：Not everything that can be counted counts and not everything that counts can be counted. ——Albert · Einstein
后来经Justin老师解释，这是一种写作手法：交错配列，英文名叫chiasmus， 并引出肯尼迪当选美国总统，发表就职演讲时的名句：
Ask not what your country can do for you, ask what you can do for your country.
紧接着，自己动手查了词典，进一步了解了这种修辞手法是什么，怎么用。
chiasmus
1. 发音： 英美发音： Br: /kaɪ'æzməs/ Am: /kɪ'æzməs/
2. 中文释义为：交错法，交错配列法
3. 在Vocabulary.com Dictionary 的英文释义为：
Chiasmus is a rhetorical technique that involves a reversal of terms, such as “It’s good to be lucky, but it’s lucky to be good.”
Chiasmus is a literary device using repetition to create compelling statements, including many famous quotations, such as John F. Kennedy’s famous call to action: “Ask not what your country can do for you; ask what you can do for your country." The roots of this word come from the Greek letter chi, which is roughly a cross shape, and chiasmus does involve a crossing over of terms, as in the saying, “When the going gets tough, the tough get going.“
4. 举一反三造句：
Eating healthily is good to keep your health, while to keep your health is to eat healthily.
