随便google一下就很清楚了。
Pupa and chrysalis have the same meaning: the transformation stage between the larva and the adult. While pupa can refer to this naked stage in either a butterfly or moth, chrysalis is strictly used for the butterfly pupa. A cocoon is the silk casing that a moth caterpillar spins around it before it turns into a pupa.
【 在 hgoldfish 的大作中提到: 】
: 感觉英语里面最难的就是同义词。一个意思有好几个单词，但是不知道用哪个。
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FROM 192.19.222.*