So what this means, if you used to have two children and now you have four, how do you provide for the extra two?

比如一家过去有两个孩子,现在多了两个,多了两张嘴,怎么办呢

耶鲁公开课 - 古希腊历史简介课程节选

Typically--I don't know for those particular children, but typically on those tasks three-year-olds and young four-year-olds tend to fail, and around the age of four or five kids tend to succeed.

我不太了解那些特定儿童的情况,但一般来讲,三岁和刚进入四岁的儿童,通常会在这些任务中失败,而四岁或是五岁左右的儿童则通常会成功

耶鲁公开课 - 心理学导论课程节选

Also according to the Nuzi texts, if a wife is barren, she is to provide a maidservant as a substitute to bear her husband's children. And this is something that happens with three out of the four matriarchs, who are afflicted with infertility: Sarah, Rachel and Leah.

根据Nuzi文件，如果妻子不能生育,那作为替代她就要让自己的女仆为自己的丈夫生养后代,女族长中四分之三都会出现这种情况,她们饱受不孕的折磨，撒拉、拉结和利亚都是这样。

耶鲁公开课 - 旧约导论课程节选