Fdma
频分多路,频分多址
🗣️ 情景例句
This is a crazy morning. Hello, Richard.
这是一个忙得头昏的早晨。哈喽， Richard。
He is a good friend that speaks well of us behind our backs.
背后说人好话的够朋友。
The letter x stands for an unknown number.
字母x代表未知数。