Beauty is but skin-deep.

美丽只是外表。

Beauty is only skin-deep.

美貌是肤浅的。

Their differences of opinion are only skin-deep .

他们的意见分歧只是表面的。

They be lieve that public concern is only skin-deep.

他们相信公众的关心是很表面的。

However, they should be reminded that beauty is only skin-deep.

然而，我们应该提醒她们美色是肤浅的。