sealed bid pricing

例句：

1. 1.In the bidding process, sealed bids are accepted only if they meet certain criteria.
   在竞标过程中，只有符合一定标准的密封报价才被接受。
2. 2. The sealed bid system ensures that all bidders have an equal opportunity to win the contract.
   密封报价系统确保所有投标人都有平等的机会赢得合同。
3. 3.The sealed bidding process is a common practice in international construction projects.
   密封报价过程是国际建设项目中常见的做法。