Things that are made from organic material age and decay especially when they stop being alive.

由有机物所制成的物品通常都会慢慢腐烂，特别是失去生命之后。

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Things that are made from organic material age and decay, especially when they stop being alive.

由有机物所制成的物品通常都会慢慢腐烂，特别是失去生命之后。

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Consequently, children of a particular age cannot be expected to master educational material without taking into account their current level of cognitive development.

因此，如果不考虑特定年龄段的孩子们目前的认知发展水平，就不能期待他们能够掌握教材。

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