Not long ago, researches learned that four-day olds could understand addition and subtraction.

不久前，研究人员发现4天大的婴儿能够理解加减法。

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Handaxes are not things you knock off; they are the result of experience, of careful planning and of skill, learned and refined over a long period.

石斧可不是你乱凿一通就可以整出来的东西，它们可是经验的成果，凝结着精心设计与高超技艺，这些都得通过一段相当长期的学习与提升。

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Her grandfather, Long Wanting, said the girl's father learned of the news, but could not schedule time to come back and check on the children.

龙张欢的爷爷龙万挺说道，尽管龙的父亲已经获知了这个消息，但还没有安排返乡回家探望子女的时间。

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It came up not long after I learned that she had a son, a fact that she had been keeping from me because you know what?

NEWYORKER: Swimming

Not long after I learned about this practice by my insurance-defense colleagues (the business litigators like me did not engage in these practices) I saw an associate filling out 20 or 30 pages of a time sheet.

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It has not forgotten, and it has not learned to trust those who sat on the hills for three long years and inflicted such misery.

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