Dogs are pets in big _cities_.There are about four _hundred___and fifty kinds of dogs on the earth.
cities 城市city的复数形式;hundred 百.
意思:狗在大城市是宠物.全世界有大约450种狗.
Dogs are pets in big _cities_.There are about four _hundred___and fifty kinds of dogs on the earth.
cities 城市city的复数形式;hundred 百.
意思:狗在大城市是宠物.全世界有大约450种狗.