Raanan
[人名] 拉阿南
🗣️ 情景例句
Please don't worry.
请别担心。
I am sorry that we are unable to make you an offer for the time being.
很抱歉目前我们不能报盘。
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。