In this paper the authors give the formulas for Calculating the entropy change of an ideal gas between two states of an arbitrary quasistatic process and the criterions to determine the plus minus signs of the entropy change.

By convention, these graphics are usually triangles that point to the right for closed or down for open; or plus and minus signs, where plus means closed and minus means open.

按照惯例，通常使用向右的三角形取代closed，向下的三角形取代open；也可使用加减号，加号表示closed，减号表示open。

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Click on the plus and minus signs to adjust the proportions between extracts in your new fragrance.

点击正负标志调整在你的新香水中提取物的比例。

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Embedded minus signs are accepted but any additional data is truncated.

接受内嵌负号，但截断额外的数据。

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Minus signs are also accepted when placed in accordance with the current pattern.

依照当前模式放置，负号也被接受了。

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Sendmail developers presumed that since they didn't allow minus signs, there was no need to check.

Sendamil的开发者想当然地认为既然他们不允许使用减号，就不必再去检查输入是不是负数了。

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Each of these minus signs represents a folding point.

这些减号每一个都代表一个折叠点。

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I pay the bill but he neglected to give me a receipt

我付了帐单，但他忘了给我收据

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The power supply has been cut off because we forgot to pay the bill.

因为我们忘记了缴费，所以电源被切断了。

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You can pay the bill for once.

你难得可以付一次账。

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Ask him to give you a receipt when you pay the bill.

你付帐单时向他要一张收据。

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If you still dont pay the bill, I will call the collection.

如果你还是不打算付帐单的话，我就要打电话给催收部门了。

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You are supposed to do pay the bill by Saturday.

你应该在周六之前结清这笔账。

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Can I use this voucher to pay the bill?

我可以用这张餐券付账吗？

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You may be disconnected if you do not pay the bill.

若不付费用就可能停止供应。

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You can pay the bill with a cheek if you like.

你若愿意的话可用支票来付账。

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Generally speaking, one party who propose treat will pay the bill in China.

一般来说，在中国总是有一方来付账。

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Who is Going to Pay the Bill?

谁来付账？（英文）

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To check whether you have enough money to pay the bill, get the price

要查看您是否带了足够的钱来付账，可以获取价格

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I won't have enough cash left to pay the bill.

我将没有足够的现金来付账了。

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Our host left us to pay the bill.

我们的主人离开了我们，去买单了。

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