“行家的”造句

他以经济学行家的眼光审视这个问题.
He cast a professional economist's eyes on the problem.

你在买股票前,最好听听行家的意见.
You had better get professional advice before buying stocks.

然后, 他端起酒杯, 带著行家的表情品尝了一下.
Next, he carries a goblet, the expression that bringing an expert sampled.