"Are you all very good?" is the Engpsh translation of "你们都很优秀吗" in Chinese. This phrase is a question asking if everyone is very good or talented at something.

The word "优秀" in Chinese means "excellent" or "outstanding" in Engpsh. The word "都" means "all" or "everyone" in Engpsh. The word "吗" is a particle added to the end of a sentence to make it a question in Chinese.

Here are some examples of how this phrase can be used in Engpsh:

"Are you all very good at playing the piano?"
"Are you all very good at speaking Engpsh?"
"Are you all very good at solving math problems?"

In each of these examples, the speaker is asking if everyone is very talented or skilled at the activity mentioned.