O3
[医] 臭氧
🗣️ 情景例句
Attending school is compulsory in this country.
这国家衽的是义务教育。
You will leap for joy when you hear the answer.
如果你听到了答案，你会高兴的跳起来的。
Where shall we go this evening?
今晚咱们去哪？