Radiomaterial
放射性物质
🗣️ 情景例句
Having some dinner?
吃点晚餐？
Your father's honour is to you but a second-hand honour.
对于你来说，父亲的荣誉只是间接的荣誉。
We can do that at the meeting tomorrow.
我们明天开会时再签订吧。