他们这样做有合理的原因。

And they are doing so for good reasons.

youdao

只有在这条神秘的爱情方程序里面，我才能够找到任何合理的原因。

It is only in the mysterious equations of love, that any logical reasons can be found.

youdao

我想增加的内容开始没有在原来的文章被提及，是因为某些合理的原因吗？

Is the content I am adding purposely excluded from the original article for a creditable reason?

youdao

It's not until Book Three of Paradise Lost that the poet explicitly reveals to us, to his readers, the fact of the physical handicap that might reasonably be thought to render impossible his composition of the poem.

直到失乐园第三卷,诗人才明确告诉读者们，自己失明的事实,这可能被合理的认为是他无法完成诗歌创作的原因。

耶鲁公开课 - 弥尔顿课程节选