1 [I,T] (used about a ball, etc) to move away quickly after it has hit a hard surface; to make a ball do this （指球等）反弹；使反弹: The stone bounced off the wall and hit her on the head. 石头从墙上弹开，击中她的脑袋。 A small boy came down the street, bouncing a ball. 一个小男孩在街上一边走一边拍着皮球玩。

2 [I] to jump up and down continuously 不断蹦跳: The children were bouncing on their beds. 孩子们在他们的床上蹦来跳去。 ☞picture at hop 见 hop 插图

3 [I,T] (used about a cheque) to be returned by a bank without payment because there is not enough money in the account （指支票因账户缺钱而）被退票 bounce noun [C,U]