Ballisties
[机] 弹道学
🗣️ 情景例句
part of the building for younger people.
另一部分给年轻人用。
As soon as I complete my training,I'm going to be a bank teller.
一旦我完成训练，我将是一个银行出纳。
He no sooner recovers his equilibrium than the next porpoise comes along and hits him another crack.
海龟刚恢复平衡，第二只海豚又冲过来猛击一下。