bob up
英 [ˈbɔb ʌp] 美 [ˈbɑb ʌp]

n.

（丝带、头发等的）一束；（孩童或女子的）短发；钟摆；跳跃舞（一种苏格兰民间舞）

v.

突然出现；

英英释义

bob up

• v.originate or come into being

  同义词：arisecome up

双语例句

1. He keeps bobbing up in the most unlikely places.
   他总是在极不可能出现的地方突然出现。
2. A difficulty has cropped up at work.
   工作中突然出现困难。

权威例句

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