Nulla
[计] 空的
🗣️ 情景例句
To watch his woods fill up with snow.
注视他落满雪花的林子。
He is wise that is honest.
诚实者明智。
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）。