Radioactive hydrogen
[医] 放射性氢
🧩 词语组成解析
🗣️ 情景例句
Don't rush, take your time.
别急急忙忙的，慢慢来。
If you dance you must pay the fiddler.
要想寻欢作乐，代价非付不可。
I will have to choose presents for all the family soon, but I haven't chosen any yet!
我很快就要为每一位家庭成员选购礼物，但我至今还什么也没买！