Rnaa
[化] 放化中子活化分析
🗣️ 情景例句
I'm not sure I'm up to it.
我不能肯定我是否能做得来。
I want to welcome you all here for the fourth annual meeting of our Asian sales staff.
欢迎所有来参加我们亚洲推销员第四届年会的代表。
A week? As long as that?
一星期？要那么长时间？