touch/tʌtʃ/

v. put your hand or finger on sth

n. the act of touching sb/sth

v. [T] 触摸，接触：Don't touch the sculpture. 请勿触摸雕塑。

◇[touch sb on the + 身体部位] Jane touched him on the back. 简碰了碰他的背。

n. [C,常S; U] 触摸，触，碰：She felt a gentle touch on her shoulder. 她感到有人在她肩膀上轻轻碰了一下。

◇a sense of touch 触觉

be/get/keep in touch (with sb) （与…）有/进行/保持联系：We are in touch after college. 大学毕业后我们一直有联系。

用法touch him on the arm也可说touch his arm。