If you often watch live broadcasts and like to watch dance anchors, you should often see the words "drive a train" in the barrage.

Here, I understand the meaning of dancing, but this dance will be different in peacetime. Is there any specific way? I can't understand it until I see it myself. Literature is not very expressive. Another explanation is that two or more people discuss a bad topic, or they can call a train. What kind of noise will the train make when it starts? Do you understand everything? If you don't understand, read it again from beginning to end. I feel that this stalk has been explained thoroughly, and there will be nothing I don't understand.