动用 (dòng yòng): to utilize; to put sth to use

In order to complete this urgent project, the company utilized all available manpower and funds.

When major natural disasters occur, the government usually mobilizes the military to participate in rescue efforts.

To pay for his mother's medical expenses, he had to use all his savings that were meant for buying a house.

These special funds can only be used after approval; no one may misappropriate them without authorization.