Rnaa
[化] 放化中子活化分析
🗣️ 情景例句
Yeah, just like I certainly did not expect to buy these gifts at such low prices.
是啊，我怎么也没想到买这些礼物才花了这么点钱。
A stitch in time saves nine.
小洞不补，大洞吃苦。
No, I'm from Britain.
不，我从不列颠来。