Fdma
频分多路,频分多址
🗣️ 情景例句
Don't you feel well?
你感觉不好吗？
Please hurry, we're a bit pressed for time.
请快点，我们时间不多了。
Now, this is the chemistry lab. Have you been in this lab before?
好啦，这是化学实验室。你们以前到过这个实验室吗？