Do not eat fresh produce from the garden if it has come in contact with floodwater.

VOA: special.2010.07.19

Common objects can be pure or impure; it just depends whether or not they've been in contact with a source of impurity or not. Alright?

普通的事物可以是纯洁的或者不纯洁的;,原因只取决于它们是否,和一些不纯洁的来源有接触，对吧？

耶鲁公开课 - 旧约导论课程节选

"Currently,many of the people who have not traveled, we know have been in contact with the travelers returned,"

VOA: standard.2009.05.14

With his mind electronically linked to his Avatar body, Jake not only can walk again and survive in the toxic atmosphere of Pandora, he can also make direct contact with the Na'vi.

VOA: standard.2009.12.19