Polydideuteroethylene
[化] 聚二氘乙烯
🗣️ 情景例句
I really feel bad about it,
我真过意不去。
If you can be well without health you may be happy without virtue.
如果不健康而能强强壮壮，那么无美德也可快快乐乐。
How old are you?
你们多大了？