Radiolabelling
[化] 放射性标记
🗣️ 情景例句
I'm gonna do an article
我准备写一篇文章
Lifeless, faultless.
只有死人才不会犯错误。
When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed.
不久前，一架轻型客机偏离了航线，在山区坠毁，飞行员丧生。