“鉴赏力”的英语可以翻译为：percipient ...

威廉是个有鉴赏力的人，对于品质的优劣很有眼光。William was a man of discernment, with an eye for quality.音乐鉴赏力差的人怎么会有那么多?How could so many people have such bad taste in music?看来他对音乐还有一定的鉴赏力.It appeared that he had a taste for music....