Cheryl Richardson also points to one of the study's findings that injuries are often the result of contact with a person or a structure.

VOA: special.2009.08.06

And research very often delivers bad news, saying it's not enough-- the contact; it's not enough to praise.

研究往往带来坏消息，只是接触还不够;,只是赞扬还不够。

哈佛公开课 - 幸福课课程节选

In addition to Jenner, there was a farmer named Benjamin Jesty, who recognized that farmers, being in contact with cows, didn't get disease as often as non-farmers did.

除了詹纳,还有个叫本杰明?加斯特的农民,他发现与奶牛接触的农民,不像其他人那样容易患天花

耶鲁公开课 - 生物医学工程探索课程节选