Tracer bullet
曳光子弹
🧩 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
Weight training makes me feel good.
举重训练使我感觉不错。
One ploughs, another sow; who will reap no one knows.
有的耕，有的播，谁来收获很难说。
Then wait until the fire is out.
然后，等火熄灭。