很少有婴儿能在这种罕见的情况下存活下来，即使存活下来的婴儿也必须经历多次手术，而且可能有复杂的需求。

Few babies survive this rare condition, and those who do must endure numerous operations and are likely to have complex needs.

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尽管我们当中许多人都曾多次自问过这些问题，但却很少有人真正找到了答案。

While many of us have asked ourselves these questions at various times in our lives, few people ever learn the answer.

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比如，在旅游景区，交易是否多次进行就不是那么重要，因为游客很少会再来。

For example, repeat business is not so important in vacation areas where tourists seldom come back.

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But also you'd think that if there was a group of people that really had been attending the calories it would be this group, because very few people who come in for weight loss are doing it for the first time, so almost everybody has been on lots of different dietary attempts and somewhere along the line they've been doing calories.

想一想,如果世界上还有一群人,真正关注卡路里的话,那就是肥胖人群,因为那些参加减肥项目的人中,很少有人是第一次参加,几乎人人都进行过多次不同的饮食控制,他们也尝试过计算卡路里减肥

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选