Radiocounting
放射性计数
🗣️ 情景例句
Sorry, that's not really what I mean. What I'd like to know is...
对不起，我真的不是那意思，我想知道的是…
He is hard to please.
他是难以取悦的。
It was made of red silk.
它是用大红丝绸做的。