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
... Oh ... I see.... Please, I know he wants to talk to you....
……啊……我懂。……麻烦 我知道他想跟 说话。
No matter where you go, English is always commonly used.
无论你走到哪里，英语总是被广泛地使用。
In this way, we have learned all that we know of the laws of astronomy,
例如，用这种方法，我们完全掌握了天文学的规律。