Polymine
聚乙烯亚胺; 聚乙烯亚胺
🗣️ 情景例句
and he's very unhappy about not working.
他对没有工作感到怏怏不乐。
Can you guess what I was doing this morning?
你能猜测我今早正在做什么吗？
I meet the boss himself.
我见到了老板本人。