Which one costs me more gas? Using an Air conditioner or open windows?

哪个更费油？开空调还是开车窗？

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The top can be worn buttoned up or open over a T-shirt.

这件上衣可以系上扣子或不系扣子套在T恤衫的外面穿。

《柯林斯英汉双解大词典》

Do you want to turn on the air conditioner or open the window?

你想开空调还是开窗？

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And so I leave it with all of you: Which came out of the open door C the lady,or the tiger?

VOA: special.2009.04.18

The system can be an open system, or it can be a closed system, or it can be isolated.

系统可以是开系，可以是闭系，或是孤立系。

麻省理工公开课 - 热力学与动力学课程节选

Is that something that is at work, or is it something that we could only be open to when it's ready?

它是一直存在，还是说,只有在特定时刻我们才能感知到他的力量？

普林斯顿公开课 - 人性课程节选

Companies may either sell their treasury shares (those held by the company) or open market stock.

FORBES: The Facebook Connection to Trading Stock

It will also decide whether the president will be chosen in a secret or open ballot.

ECONOMIST: Indonesia��s dangerous politics | The

They did not attend the crucial meeting, read the vital memo or open the incriminating e-mail.

ECONOMIST: They make the rules, and get the gold