Not having clean hands could lead to crock contamination, could lead to illness, could lead to an employee getting sick.

手不干净可能导致容器污染、导致疾病的发生或者会发生员工生病的情况。

The one who has clean hands and a pure heart, who does not trust in an idol or swear by a false god. [ Or swear falsely ]

就是手洁心清，不向虚妄，起誓不怀诡诈的人。

He said his researchers studied this, and " we found out that if you visit an airport any time in the world, you will realize that only one of five people have clean hands."

他说，他的研究人员对此进行了研究，“我们发现，如果随时访问全球任意一座机场，你会发现，五个人中只有一个人的手是干净的。”