A lump of iron or steel placed near a magnet arranges its molecules in an orderly manner and ACTS as a magnet itself, even though it is not touching the influencing magnet.

置于磁体附近的一块铁或一块钢，即使它没有触及该施感磁体，也会使其分子整齐地排列起来，从而本身也成了一块磁铁。

youdao

Gravity is one force that acts on a body without the source of the force actually touching it.

引力是一种受力物体收到了力的作用,但却没有接触施力物体的力

耶鲁公开课 - 基础物理课程节选

One challenge that childcare providers run up against in providing the empathy that children need, especially with the very young where I think touch is vitally important, is that teachers have to very careful in touching and comforting children because of liability issues and how easily acts of compassion can be construed as child molestation.

FORBES: Why We Should Teach Empathy To Improve Education (And Test Scores)