Tracer technique
[化] 示踪技术
🧩 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
Philip, would you join me in the kitchen, please? Philip
请你跟我来厨房好吗
I can't imagine why.
我想不通为什么。
There is no need to say anything to the other worker.
你没有必要跟那个工友说什么。