Flame tracer
曳光弹
🧩 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
That's a great idea.
真是个好主意。
The child is father of the man.
三岁定到老。
Nor is it only the ignorant and ill-educated person who has such faith in the bottle of medicine.
并不只是那些无知和没受过良好教育的人才迷信药瓶子。