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
My mother doesn't mind who comes to stay, she's very easy-going.
我母亲不在乎有什么人来往，她十分随和。
You'll be sick, if you aren't careful.
你不小心的话，就会生病。
Oh dear! I must go. Have a good day!
哎呀！我得走了，再见。