他虽然说话不多,但一听报价就知道是内行。Tā suīrán shuōhuà bù duō, dàn yì tīng bàojià jiù zhīdào shì nèiháng.Although he did not say much, one could tell he was an expert as soon as he heard the quotation.
他一看就知道这茶好不好,真是内行。Tā yí kàn jiù zhīdào zhè chá hǎo bu hǎo, zhēnshi nèiháng.He can tell at a glance whether the tea is good; he is a real expert.
买电脑最好找个内行陪你去。Mǎi diànnǎo zuìhǎo zhǎo ge nèiháng péi nǐ qù.When buying a computer, it is best to have someone who knows the field go with you.