Fleas jump onto animals or humans and hide in their hair.

跳蚤跳到动物或人身上，并藏在毛发里面。

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If you're ready to jump onto the Ajax development wagon, the following roadmap gives you a list of steps to get you started.

如果您已经准备好开始Ajax开发之旅，那么下面的路线图可以告诉您开始的步骤。

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Many companies jump onto social media sites like Facebook without looking at why they should be there or what they hope to accomplish.

许多公司一股脑儿地扎到Facebook等社交媒体站点上，之前都没想清楚他们为何该在这些网站上做广告，以及自己到底希望达成什么样的目标。

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Then they jump onto the bobsleigh and continue racing down the track.

VOA: special.2010.02.10

The country, while not necessarily gun aficionados, are internet savvy and quick to jump onto digital trends.

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Instead, what happens is that when the strategy has a down period, emotional investors jump onto another hot strategy.

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"It would jump onto depression but wouldn't be the cause, " he said.

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