blank cheque
noun
1- a cheque with the amount left for the payee to fill in未填金额的签名支票, 空白支票。
1.1
- in sing. figurative an unlimited freedom of action〈喻〉自由处理权, 全权：
he was effectively granted a blank cheque to conduct a war without Congressional authorization.
实际上他可以不经国会批准全权发动一场战争。