Edifier
n. 教导者, 启发者
🗣️ 情景例句
If you stick to the truth, you'll have nothing to fear.
如果你坚持真理，就会无所畏惧。
It's nothing.
小事情。
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。