In the United States and elsewhere the iPod leads the portable media player market, with over 30 million units sold since its inception, and over 78 percent market share for all media players.
在美国和其他地方，iPod引领着便携媒体播放器市场，从诞生至今，已经售出3千万套iPod，这占据了整个媒体播放器市场78%以上的份额。
Which is worse: a contagious, achy-all-over virus that runs its course in a week or two or an itchy-all-over allergic reaction that may last months?
到底哪一个更糟糕呢：是引起全身疼上一两周的传染病毒还是导致全身发痒数月的过敏反应？
One of the points I've made over and over in this class is that all development has its positive and its negative sides.
在班里我反复强调的一个要点就是：所有的开发都有积极的和消极的两个方向。
The world's biggest online zoo has opened its doors to show off hundreds of animals, all performing obediently over and over again.
世界上最大的网上动物园开门迎客，展出动物达数百种之多。园内的所有动物都很听话，一遍又一遍地进行表演。
The world's biggest online zoo has opened its doors to show off hundreds of animals, all performing obediently over and over again.
世界上最大的网上动物园开门迎客，展出动物达数百种之多。园内的所有动物都很听话，一遍又一遍地进行表演。
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