And he hypothesized that they were getting the disease in cows, which the disease from cows that caused a milder disease than smallpox, and that protected them from getting the more severe forms of smallpox later.

他假定奶牛将这种疾病传染给挤奶女工,这种源自奶牛的疾病比天花更温和,它保护女工们,免受更为严重的天花感染

耶鲁公开课 - 生物医学工程探索课程节选

to make a question a little bit more polite, a little bit softer.

这样可以让整个句子显得更有礼貌，也更为温和。

I'd like 课堂 - SpeakingMax英语口语达人

Also, you could use "Would you" with a "like" right after to soften the question even further.

当然，你也可以在“Would you”后面加上一个“like”，因为你可以用这个疑问句使你提出的各种问题变得更温和。

Would you 课堂 - SpeakingMax英语口语达人