Radon emanation
[医] 氡射气
🧩 词语组成解析
radon
['reidɔn]
n. <化>氡（元素符号Rn）;
n. 散发, 发出\\n[化] 射气
🗣️ 情景例句
Hi, I'm just calling to see if you got home s afely last night.
你好，我打电话来确定一下你是否已经安全到家。
You dare?
你敢？
I'm sorry, I don't know. You'd better ask that policeman.
对不起，我不知道。你最好问问那位警察。