1. But studies have found that although fathers' income usually exceeds mothers' income, women usually contribute a larger proportion of their income to their household, while men keep more for their personal use, such as for entertainment.
    但已有研究发现，尽管父亲的收入通常要超过母亲的收入，母亲通常会将自己大部分的收入用于家庭，而父亲却多用于个人消费，如娱乐等。

2. Is as the proportion of the total vocabulary of his mother tongue against those words of his own baby talk that are taken up into the vernacular of his family.
    就好像他本国语言的总词汇量和自己咿呀学语时他家庭所接纳的他的词汇量之比。

3. We are lucky in that only the lower fields, which make up a very small proportion of our farm, are affected by flooding,
    值得庆幸的是，只有低洼的受到洪水影响，而低洼地在我们农场比例很小。

4. The proportion of imports to exports is worrying the government.
    进出口的比例令政府担忧。

5. Despite their short time on Earth, however, people have brought about enormous changes to the surface of the planet — changes far out of proportion to the interval of time they have occupied it.
    然而，尽管在地球上的时日尚短，人类却已给地球表面带来了巨大的变化——这些变化与人类占据地球的短暂时间相比，是远远不成比例的。

6. A large proportion of America's young men — one third or more — simply say they don't know what they're going to do as adults.
    很大比例的美国男青年--三分之一或更多--只是说他们不知道在成年以后要做什么。