wider margin的用法和样例：
例句
- The manufacturers appear to have underbid the contracts by a wider margin than usual. Costs escalated beyond all expectations. And few were privy to the problems because the program was financed in the secret part of the Pentagon budget.
厂家对合同投的标似乎较一般低得太多。成本节节升高，超出任何人的预料。由于该计划系五角大楼秘密预算所支付，很少人知悉问题的同情。
