peeper

名词 peeper:

1. a viewer who enjoys seeing the sex acts or sex organs of others
   同义词：voyeur, Peeping Tom
2. an informal term refering to the eye
3. an animal that makes short high-pitched sounds

1. Acid rain is harmful to amphibians such as salamanders, spring peepers, and frogs.
   酸雨是有害于两栖的动物，例如鲵、春天里唧唧叫的小动物和青蛙。