🗣️ 情景例句
The whole family decided to spend their holiday in Hawaii.
全家决定到夏威夷度假。
I will be in between six and eight.
我6点至8点都在。
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。