Pacemake
[医]起搏区
🗣️ 情景例句
The thieves stole all my money.
小偷偷了我所有的钱。
A false tongue will hardly speak truth.
假舌不会吐真言。
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）。