Labelled atoms (tagged atoms)
[化] 标记原子
🧩 词语组成解析
a. 贴上标签的
n. 原子（atom的复数）
🗣️ 情景例句
Don't stand on ceremony, make yourself at home.
别客气，随便吃。
There is nothing which has not been bitter before being ripe.
事情在成功前没有不艰苦的。
One day, the man downstairs went to talk to the man. He went upstairs and knocked the door.
一天，楼下人去找楼上人谈谈。 他上楼敲门。