用于个体事物

opening, mouth, entrance, exit

distribute, assign, allot

tell, distinguish

be allowed (to do something), have one's permission (to do something)

哺乳动物，嗅觉和听觉都很灵敏，舌长而薄，可散热，毛有黄、白、黑等颜色。是人类最早驯化的家畜，种类很多，有的可以训练成警犬，有的用来帮助打猎、牧羊等。也叫犬。