P.u.o.
[医] 未知热(发热原因不明)
🗣️ 情景例句
How are you?
你怎么样？
He has been working in advertising for ten years, but now he is teaching.
他曾经在广告公司服务十年，但现在在当老师。
The third, or main wave,
第三种波，即主波，