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
In a word, we'll provide you with all good service.
我们将为你们提供最好的服务。
May I have a customs declaration form, please?
请给一份海关申报表好吗？
Perhaps more than half a year.
大约半年多吧。