钻出

She bobbed up from behind the fence.

她突然从篱笆出来。

The swimmer came out of the water and gasped for breath.

游泳的人从水里出来喘口气。

She dived in and bobbed up a few seconds later in the middle of the pool.

她潜入水中，几秒钟在游泳中央猛地出水。