Astrodynamics
n. 天文动力学, 宇宙飞行力学
🗣️ 情景例句
I'd like to order a hamburger and fries.
来个汉堡包和薯条吧。
They think people should be less extravagant.
他们认为民众应该更加节制奢侈。
One evening, however, he failed to arrive.
可是，有一天晚上，它出去后再也没回来。