If you keep rodents in a very rich environment, with lots of toys.
如果你把齧齒類動物放在一個有許多玩具的豐富環境。
You will need lots of toys which you can rotate for the puppies.
你需要為它們準備大量的可重複使用的`玩具。
He buys lots of toys for his child and he never quarrels with his wife.
他給他的孩子買很多玩具，而且他從不與妻子吵架。