1. In many developed countries, divorce rates doubled between 1970 and 1990, and in less-developed countries, about a quarter of first marriages end by the time women are in their 40s.
    在许多发达国家，1970年至1990年，离婚率上升了两倍，而在欠发达的国家，有四分之一的首次婚姻都在女方40多岁时解体。