Tagped atom
[医] 标记原子, 示踪原子
🧩 词语组成解析
🗣️ 情景例句
I have an autographed one in my office.
在我办公室里有一本签了名的。
Friendship cannot stand always on one side.
来而不往非礼也。
We can't decide who should open it first.
我们难以决定谁先打开礼物包。