Tracer atom
[化] 示踪原子
🧩 词语组成解析
tracer
['treisə]
n. 追踪者，描图者，（铁笔等）绘图工具;
🗣️ 情景例句
Bye.
再见。
Nobody likes grapes more than I do.
我最喜欢葡萄。
I went back to the ticket office at once.
我马上又回到售票处。