Radon content
[医] 氡含量
🧩 词语组成解析
radon
['reidɔn]
n. <化>氡（元素符号Rn）;
🗣️ 情景例句
Yes. And you must be Susan. Hi.
是的。 一定是Susan了。嗨
So that's how it is!
原来如此。
I arranged to meet Jane after work last night but she didn't turn up.
我昨晚安排下班后见简，但她没来。