Tracer mixture
[化] 曳迹剂
🧩 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
What? Oh, yes. Starving. Well, I...
什么？ 噢， 是， 我很饿。好啦 ，我……
Every advantage has its disadvantage.
有利必有弊。
Macaroni has been grown in this area for over six hundred years.
通心粉在这个地区已经种植了600多年了。