拍卖由于自身所具有的特殊性和优越性，被运用到社会各个领域的商品交换中，各种各样地商品采用拍卖作为其交换形式。

Owing to superior advantage of auction itself, more and more Commodity Exchange has adopted auction as a trading way in every field of lives.

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这个秘密可能采用代码的形式，交换的双方使用经过商定的内容替换词语或操作。

The secret might take the form of a code, in which the parties to the exchange have an agreed-upon set of substitutions for phrases or actions.

youdao

它以最简单的形式创建了交换消息的顺序。

In the simplest form, it creates a sequence in which the messages are exchanged.

youdao

U It's u, because u is to q plus w right, heat and work, but it's adiabatic. So there's no heat, exchange with the environment, and it's constant volume, so there's no p dV work, right.

什么是零？是U，因为,等于q加w，热量和功，但这是绝热的，所以系统与环境间没有热量交换；,同时它是灯体的，所以也没有pdV形式的功。

麻省理工公开课 - 热力学与动力学课程节选