A: Peter really is a remarkable expert! There is very little he doesn’t know.

Peter真是个了不起的专家！他知识渊博。

B: I have exactly the same feeling. This afternoon he explained the ins and outs of the stock to me. He knows a lot about investments.

我有同感，今天下午他给我解释股市的来龙去脉，他在投资方面见多识广。