radioactivity是什么意思音标:英 [ˌreɪdɪəʊæk'tɪvətɪ]美 [ˌredɪoækˈtɪvɪtɪ]

n. 放射性
[化] 放射性

n the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

radioactivity的用法和例句：

1.This rampage makes them as radioactive as him.

这样他们也会成为众矢之的

2.We detected a radioactive material down there.

我们在下面检测到了辐射性物质

3.The fragment is of a radioactive xenomineral.

這是放射性的外星物質碎片

4.They said it was radioactive. I had my hands all over it.

他们说它有辐射 我还碰过呢

5.Yeah, they're radioactive, so they have to go.

对 它们有辐射 所以必须杀死

6.Radioactive elements are tricky, but I'm working on it.

放射性元素有点不好弄 但我在想办法

7.Straight out of the radioactive heat box.

直接从放射性加热箱里出来的

8.I don't know what he's saying, but he says it's not radioactive.

我不明白他說什么 但他說別用輻射

9.Nice and nasty with a chance of radioactivity.

漂亮 肮脏 再带点辐射

10.Of course, by that time we all had the radioactive shits.

当然了 我们都被辐射了