Activable tracer
[化] 可活化示踪剂
🧩 词语组成解析
a. [化]能被活化的
tracer
['treisə]
n. 追踪者，描图者，（铁笔等）绘图工具;
🗣️ 情景例句
Why, that's wonderful!
哎呀， 这太美好了！
The buyer has the option of cancelling the contract.
买主有权撤消合同。
A born teacher, she thought she could turn a deaf-blind person into a useful human being.
她是一个天的教师，认为自己可以把一个聋盲人变成一个有用的人。