Eichler
[人名] 艾克勒
🗣️ 情景例句
Right.
对。
Work has a bitter root but sweet fruit.
劳动根虽苦，然而果实甜。
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。