Usually such gems are sold by sealed bid.

通常这样的宝石会以密封竞价的形式出售。

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Each bid is submitted in writing and is referred to as a sealed bid.

每一份标书都以书面形式提交，并被视为密封投标。

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After figuring how much those stones will be worth, they submit a sealed bid to the mining company.

在估算出这些宝石的价值后，他们会给矿业公司一个密封报价。

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Put them through a competitive bid process (sealed bid or auction), with pre-set milestones.

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Mr Green's reputation as a corporate raider was sealed when he bid for retail group Sears.

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Then it was unsold, re-bid and essentially signed, sealed and delivered to Magna-Sberbank with non-binding promises about retaining jobs.

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