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. Does smoking contribute to lung cancer?
    吸烟会导致肺癌吗?

3. In the Philippines, women were found to contribute about a third of households’ cash income, but 55 percent of household support if the economic value of their activities at home, such as growing food or gathering hay to feed the family donkey, is in
    在菲律宾，人们发现三分之一家庭的现金收入来自妇女，若是将她们家务劳动的经济价值计算在内，比如种粮食和捡干草喂家里的驴，那她们提供的家庭经济支持将占55%。

4. In the United States, a survey released earlier this month found that nearly half of employed married women contribute half or more of their family’s income.
    在美国，本月初公布的一项调查表明，将近一半的已婚职业女性的收入占家庭总收入的一半或更多。