jolly jumper
柯林斯词典
1. N a type of fixed sprung baby harness in which an infant may be placed and allowed to bounce up and down for exercise 快樂蹦蹦帶; 可拴在嬰兒身上使其上下蹦跳鍛鍊[Canadian] [trademark]
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1. N a type of fixed sprung baby harness in which an infant may be placed and allowed to bounce up and down for exercise 快樂蹦蹦帶; 可拴在嬰兒身上使其上下蹦跳鍛鍊[Canadian] [trademark]