Siltation
沉积作用, 淤积
🗣️ 情景例句
I must meet the deadline.
我必须赶上最后期限。
I'll be ready within five minutes.
我五分钟内就可以准备好了。
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）。