英语语法分析

He was also a writer of beautiful stories, some of which are collaborations with his fiancée.

他也撰写优美的故事，有些是和他的未婚妻合作的成果。

《柯林斯英汉双解大词典》

There are historical and political reasons as to why collaborations emerge.

这项合作的产生有其历史和政治上的原因。

He says collaborations have also emerged because of increased possibilities.

他说，合作的出现也是因为可能性的增加。