儿孙的英文：
children and grandchildren; descendants; posterity

Here was I thinking you a new-sprung child of nature; there were you, the belated seedling of an effete aristocracy
我本来还以为你是大自然的新生儿女哪，谁知道可是奄奄绝息的贵族留下来的一枝日暮途穷的孽子儿孙呢！

And it is not for children.
它并不是为孩子准备的。

This room was designed for the children/designed as a children's playroom.
这个房间预定留给孩子们用;留作孩子们的游戏室。

The children shouted
孩子们齐声大喊“是”。

Grandparents tend to cocker up their grandchildren.
祖父母们总是很宠爱孙儿。

Showed their fondness for their grandchildren By financing their education
通过资助孙辈们的教育来表达对他们的喜爱

He dotes on his grandchildren and indulges their every whim.
他溺爱自己的孙辈，并且满足他们的任何想法

derivation; descendent
派生物

You would never descend to fraud.
你绝不能堕落到骗人的地步。

You would never descend to cheating.
你绝不至沦于欺骗。