Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
marsupial – n. a kind of animal that carries its young under a piece of skin on the mother's stomach
moment – n. a brief period of time
breeding – n. the act or process of producing plants or animals
predator – n. an animal that lives by killing and eating other animals
mammal – n. a kind of animal that feeds milk to its young and that usually has hair covering most of its skin
