P.u.o.
[医] 未知热(发热原因不明)
🗣️ 情景例句
I want to send this letter to China, by air mail.
我想把这封信航空邮到中国。
A sense of regret or resentment will not help us in any way.
后悔和怨恨不会给我们任何帮助。
Chinese take-away food is also popular.
中式方便食品也很流行。