与其将他们的精力奉献在像打出一个更好的犁或者将地犁得更好这样的事情上，蒙太罗的农民们更愿意只做那些为了能保持维持饮食生活的必须工作，但仅仅如此而已。

Rather than devoting themselves to hammering out a better plow or plowing a better field, the peasants of Montaillou did what was necessary to keep food on their table, but nothing more.

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必须维持工资率以保持消费者的购买力。

Wage rates must be maintained in order to maintain the purchasing power of the consumer.

《柯林斯英汉双解大词典》

人们不但可以通过加强锻炼，而且能够通过结交志同道合的朋友来保持健康和维持身材。

People not only keep fit or keep a good shape through doing more physical exercises, but also through making friends who have the similar interests.

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In order for life to proceed, you need to maintain a constant internal environment.

为了维持生命,人体的内环境需要保持稳定

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Some people can fight the brain off in this case, and control their food intake, maintain a healthy diet, and maintain a normal weight, but the number of such people in the population is shrinking by the day.

有些人可以抵制大脑的控制,控制食物的摄入量,维持健康饮食 保持正常体重,而今,这类人的数量日益减少

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