半吊子

bàn diào zi yì shù jiā

半吊子艺术家

dabbler in the arts

wǒ zuì bǐ shì zhè zhǒng yīng yǔ bàn diào zi de rén le

我最鄙视这种英语半吊子的人了！

I have held this English dabbler person in contempt most!

gàn zhè háng de bàn diào zi tài duō

干这行的半吊子太多。

There are too many cowboys in the business.