Picescent
a. 黑色的,乌黑的
🗣️ 情景例句
Don't you have to work?
你明天不用上班吗？
All men are mortal.
人孰无死。
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）。