Polyvinyl methylamine
[化] 聚乙烯甲胺
?? 詞語組成解析
a. 聚乙烯基的
[化] 甲胺\\n[醫] 甲胺
??? 情景例句
Try putting him across your lap on his stomach.
試試讓他趴著睡在你大腿上。
May I take pictures?
我能照相嗎？
But this was before Annie Sullivan came to stay.
但是，這都是安妮·莎利文來住下之前的事了。