Ternlet
小燕鸥
🗣️ 情景例句
This could be your lucky day.
今天你要时来运转了。
Speed is the soldier's asset.
兵贵神速。
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。