Astrodynamics
n. 天文动力学, 宇宙飞行力学
🗣️ 情景例句
I haven't decided whether I will go camping or not, but it is certainly possible.
我还没决定是否去露营，但还是有可能去的。
How many dozen are you going to take?
你要拿几打？
I'm sure you'll enjoy yourselves.
我肯定你们一定会玩得很痛快。