Lansner
[人名] 兰斯纳
🗣️ 情景例句
The bad news hit everyone hard.
恶耗使每个人都受到了沉重打击。
We'd better not go out tomorrow, son.
孩子，我们明天最好不要出去。
and a period (which is the time it takes a wave crest to travel one wave length).
和周期（浪峰走过一个波长所需的时间）。