Colds are more common in the fall and winter because the cooler, wetter weather drives people inside, and viruses can more easily jump from one person to the next.

在较冷的秋季和冬季，寒冷更为常见，更为阴冷多雨的天气让人们呆在室内，病毒可以轻易的从一个人传给另一个。

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Do you find yourself dragging your feet, hoping deep down inside that someone else will jump in and take charge-perhaps another manager, your boss, or even a competitor?

你在等别人开始。你发现总是拖拖拉拉的，心里希望其他人加入并管理——也许是另一个管理者，上司甚至是个竞争者吗？

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To siphon water, boys jump on top of the truck and jam their hoses inside.

为了能吸到水，男孩们跳到罐车上，把管子塞到里面。

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He wants you to run, he wants you to walk, he wants you to jump outside instead of being cooped up inside in front of the TV playing videogames.

WHITEHOUSE: Run Across America at the White House

Then it's immediately on to next year which teams are getting better, which ones are getting worse, and then the NFL combine, in which prospects inside an unoccupied stadium run and jump.

WSJ: Jason Gay: Do Sports Fans Need an Off-Season?

This is made of sheets of carbon, inside which electrons can flow smoothly, but between which they cannot easily jump.

ECONOMIST: Magnetism