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
I'd like a side order of onion rings, please.
我想再要一个洋葱圈。
My mother mailed me a parcel.
我妈给我寄了一个包裹。
It's not as cold as it was yesterday.
今天不想昨天那么冷。