英译中，来自翻译练习

·英译中：

原文：

The authors cite an earlier paper from researchers at the University of California, San Diego, that found in the early 1990s mothers between the ages of 25 and 34 of all education levels spent between 11 and 13 hours a week on child-care activities. By the early 2000s, college-educated women reported spending almost double the time—between 20 and 22 hours—on child care, while noncollege graduates had increased their share to around 16 hours.

译文：

作者提到加州大学圣地亚哥分校研究人员的一篇早期论文。论文发现，上世纪90年代初，25至34岁的母亲无论受教育水平如何，每周花在照料孩子上的时间为11至13小时。而到本世纪初，受过大学教育的女性称，她们花在照料孩子上的时间几乎翻倍，达到20至22小时；没受过大学教育的女性照料孩子的时间增至16小时左右。