Ballistics
n. 弹道学, 发射学\\n[化] 弹道学
📖 牛津释义
ballistics
n[sing v]
study of things that are shot or fired through the air, eg bullets, missiles, etc 弹道学（对射击或发射之物如子弹、导弹等的研究）
[attrib 作定语]
a ballistics expert 弹道学专家.
🗣️ 情景例句
How many classes are you taking this semester?
这学期你有多少课？
I asked him if he spoke English.
我问他他是否说英语。
The child learning to see, first distinguishes only two-dimensional shape;
正在学看东西的儿童起初只会分辨二维形态，