bob up and down

基本解释

She proceeds to bob head up and down, moving the 1/8 portion in and out like a trashy metronome.
她开始上下移动头，把这八分之一吞进吞出，像个坏掉了的节拍器。
Maude would bob her small yellow head up and down in a feathered frenzy. Harold would circle the table, wagging his tail and batting his eyes.
它们多想尝一尝啊，所以一到周五，这两个家伙就表现得十分好动，莫德会快速疯狂地频频上下摆动它的黄色小脑袋，哈罗德摇着尾巴，围着餐桌绕来绕去，眼睛不停地冲主人们眨着。
Bob, Jack, Hughie and Stu were hopping up and down by the front gate when Fee finally pushed Meggie out of the door.
当菲最后把麦琪推出门时，鲍勃、杰克、胡伊和斯图在大门口急得双脚直跳。

Neoclassical buildings that bob up and down on air currents.
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