Rfo
abbr. radio frequency oscillator 无线电频率振荡器; request for factory order 要求工厂定购
🗣️ 情景例句
Thanks a lot.
非常感谢。
How many passengers were on the train?
在火车上有多少旅客？
I felt as if I had stumbled into a nightmare country, as you sometimes do in dreams.
我感到自己就像平时作梦那样迷迷糊糊地闯进了恶梦境地。