🗣️ 情景例句
I happened to meet her on the bus.
我凑巧在公共汽车上碰见她。
That's monkey business!
胡闹！
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
这个频率是空间氢原子释放的自然频率，是在1951年被人类发现的。