A browser running on a cell phone might, for example, use different techniques to display the controls; menus and lists are easier for cell phone users than pop-up choice boxes.

比方说，移动电话上的浏览器可能采用不同的技术显示控件；对移动电话用户而言，菜单和列表比弹出式选择框更方便。

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Injuries sometimes pop up when you're paying too much attention to your running muscles and forgetting about the others.

在你过分关注跑步肌肉训练而忽略其他的时候，伤病会加重。

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Finding a mantra isn't hard: it can pop into your head as you're listening to your iPod, chatting with training partners, or flipping through a running magazine.

找到一个咒语不是很困难：当你听iPod时，和训练伙伴聊天时，或者浏览跑步杂志时，它可能就会跳进你的脑中。

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And late in the game, he put a big hit on a very big running back and felt a pop in his neck.

NPR: Former NFL Players Unable to Pay Medical Bills

Because having two pop-up blockers running will have odd effects, and your favourite sites may stop working properly, and then you have to examine two lots of pop-up software to find out which one is causing trouble.

BBC: [an error occurred while processing this directive]

You know you have failed if, after five minutes, you are panting as if you had been running a marathon and it seems that your heart is about to pop out.

BBC: Scaling the Ecuadorean Andes