A.f.c.
自动频率控制
🗣️ 情景例句
It must be interesting for you.
你对那一定很关心。
The water that bears the boat is the same that swallows it up.
水能载舟，也能覆舟。
Yes, it is. You need to wear warmer clothes.
是啊，你应该穿得更暖和些。