英文解释：Describing someone who gives a bad first impression but is actually a good person. Someone who doesn't appear to be competent, yet is extremely capable at what he/she does.

　　例句：

　　Dr. Bruce is a spaz, but he's one of the best doctors I know. You wouldn't know it by looking at him...good lenses, bad frames.

　　布鲁斯医生有点怪，但他是我认识的最好的医生。从外表是看不出来的，人不可貌相。