外表是骗人的

appearance fee───应诉费；出场费

appearance fees───应诉费；出场费

should never judge a person by mere external appearances because appearances are deceptive.───不要只通过外表来评判一个人，因为外表具有欺骗性。

Appearances are deceptive.───外表是靠不住的。

I agree with you, but customers should also learn that appearances are deceptive sometimes.───我同意你的看法，可是顾客们还应该知道外表有时是有欺骗性的。