给你的朋友写封信,告诉他你去动物园看到的事情 英文带翻译答:Mammals are rabbits, cats, dogs, pigs, pandas, monkeys, hippos etc. They are viviparism. 哺乳类动物有兔子、猫、狗、猪、熊猫、猴子、河马等。它们是胎生动物。Fishes live in the sea, river and water. For example, salmons, eels, sharks, whales. 鱼类栖息在大海、河川和水里。例如,...