她毛衣上的毛线球装饰看起来很可爱。

The ___bobble on her sweater looks adorable.

她在表演中犯了个小错误，导致整个舞蹈套路都乱了。

Her ___bobble during the performance threw off the entire dance routine.

玩具球在桌面上不停地上下弹跳。

The toy ball ___bobbled up and down on the table.