脫口說英語口語生活習語大全T-14：the ins and outs 來龍去脈

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

A:彼得真是個了不起的專家!他知識淵博。

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

B：我有同感，今天下午他給我解釋了股票市場的來龍去脈，他在投資方面見多識廣。