This has forged a new relationship between buyer and seller.

这在买方和卖方之间形成了一种新的关系。

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These clauses form part of the contract between buyer and seller.

这些条款构成买卖双方所签合同的一部分。

《牛津词典》

Though this is very convenient for both buyer and seller, it should not be forgotten that cheques are not real money: they are quite valueless in themselves.

尽管这对买卖双方都很方便，但不应忘记，支票不是真正的钱：它们本身毫无价值。

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Once a price is set, the market maker oversees the transaction between a buyer and seller.

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In an illiquid market, it behooves both buyer and seller to carefully arrive at a value.

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For each transaction, a third-party service must verify that both buyer and seller are over 21.

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