人的知识世代积累、相传成统。
Human knowledge is accumulated and passed on through generations.
分析引种不同世代法国莱茵鹅育雏期生长发育情况，了解莱茵鹅引入我国后的适应性，为鹅的改良和育种积累素材。
Oberve growth and development of france white roasting geese, analysis adaptation of introduced geese in our feeding standard and environment, so that we can accumulate.
致害性的转化是渐变的，在世代间似有遗传积累。
It seemed that there was a heritable accumulation from generation to generation.
DON含量的狭义遗传力为74.54%，因此以抗DON积累为指标的赤霉病抗性育种，可以在早期世代进行选择。
The narrow sense heritability of DON content in grains was 74.54%, indicating that it is feasible to select lines with low DON content in earlier generations.
但是赞成宽泛教育的最重要的理由是，在学习世世代代积累起来的知识的同时，我们也提高了自己的道德感。
But the most important argument for a broad education is that in studying the accumulated wisdom of the ages, we improve our moral sense.
但是赞成宽泛教育的最重要的理由是，在学习世世代代积累起来的知识的同时，我们也提高了自己的道德感。
But the most important argument for a broad education is that in studying the accumulated wisdom of the ages, we improve our moral sense.
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