Knowledge and information might be out of date before we know. Skills might not be useful any more when they grow up.

知识和信息也许很快过时，到了他们长大的时候一些技能已经用不上了。

youdao

You could go away, and grow almost out of knowledge, and never come to tell your poor old friend how fortunate you were, proud lad!

傲慢的小伙子，你居然这样走开，杳无音信，不来向你的可怜的老朋友告诉一声你多么走运？

youdao

He points out that the knowledge of how to do this, of how to grow the kind of grapes you want, viticulture, and also arboriculture, both of these, are learned from Asia.

他还指出,要出色地运用这些的知识,关于如何栽培出你要的葡萄品种,如何培植葡萄和架设葡萄藤架,这两项技术都学自亚洲

耶鲁公开课 - 古希腊历史简介课程节选