半世纪以来，合理的城乡规划使英国得以保留令其他国家羡慕的乡村协调性，同时还允许低密度的城镇人口。

Half a century of town and country planning has enabled it to retain an enviable rural coherence, while still permitting low-density urban living.

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通常，若是用茶杯泡的茶，在茶喝完一半之后就应该加开水，这样，茶杯就一直都是满的，茶的芳香也得以保留。

Usually, if the tea is made in a teacup, boiling water should be added into the cup when half of the tea in it has been consumed; and thus the cup is kept filled and the tea retains the same bouquet.

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这样的话，优势基因转移将会得以保留。

In this case, an advantageous gene transfer might be preserved.

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Those people would bank their calories, survive the next famine, contribute to the gene pool, and thereby create what we have today which are organisms, humans, who very much like the kind of diets that are creating problems.

这些人储存能量以保证,在下一次饥荒时得以幸存,使他们的基因保留在了基因库中,从而造就今天的生物体,即人类,人类非常喜欢这类饮食,从而引发了很多问题

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选