Bimirror
双镜
🗣️ 情景例句
I'd like that.
我很乐意。
Yeah, so that I can repair it, OK?
对啦,那样我就能替你缝补了，知道不？
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）。