a blank check的用法和样例：
- If she wins, they get a blank check.
- He will give you a blank check to deal with the problem.
- The President was given a blank check by Congress to continue the war.
- Taiwan has reacted by denouncing the bill as a blank check to invade.
- Wilcox was given a blank check in the choice of personnel for the new department.
- That last statement hardly reads as a blank check to any Security Council member or other state to act on its own to require Iraq's disarmament.