眼尖

yī gè yǎn jiān de shòu huò yuán fā xiàn le jiǎ huò

一个眼尖的售货员发现了假货。

A sharp-eyed shop assistant spotted the fake.

yī gè yǎn jiān de dú zhě fā xiàn le zuó tiān bào zhǐ shang de cuò wù

一个眼尖的读者发现了昨天报纸上的错误。

A sharp-eyed reader spotted the mistake in yesterday's paper.