我觉得性是夫妻幸福的重要原因的翻译：I think sex is important cause of marital happiness 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

I think sex is an important reason for marital happiness

I think sex is important cause of marital happiness

I thought the nature is husband's and wife's happy important reason

I think of happiness is an important reason why the husband and wife

I think sex is important cause of marital happiness