Earmu
护耳
🗣️ 情景例句
You must be green to believe that!
你真幼稚，竟然相信那个。
Every one's faults are not written in their foreheads.
知人知面不知心。
This depends on the precise radio frequency of the 21-cm wavelength, or 1420 megacycles per second.
这种通讯联系要靠21厘米波段，即每秒1420兆周的精确无线电频率。