你可以在室内特殊的墙壁上做，也可以在室外真正的山上做。

You can do it indoors on special walls or outdoors on real mountains.

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如果我们在室外，要远离坠落物。

Stay away from falling objects if we are outside.

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如果温度低于0摄氏度，水在室外就会结冰。

If the temperature is below 0℃, water will turn into ice in the open air.

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And if you put this in the well-ventilated area, if you prepare this outside, the h c n gas will actually be released into the air, so you're safe, you can eat it later.

而如果你把它们放在通风良好的地方，在室外处理，那么氰化氢气体,将会被释放到空气中，这样你就安全了，过后就可以吃了。

麻省理工公开课 - 化学原理课程节选

just to sit outside and have a coffee and watch the world go by, and...

就在室外坐着，喝一杯咖啡，观察周围的一切，然后……

科芬园的氛围 - SpeakingMax英语口语达人

It takes place in small rooms. If you begin to think about it, you can almost see the set changes: in the diner, on the train station. That's about the most open place, on the train platform. That's about the most open place we see.

在很小的空间里发生，如果你们开始思考它，你们几乎能看到场景的改变，晚饭，在火车站，那算是最室外了，在火车的月台上，那也算是最室外了。

耶鲁公开课 - 1945年后的美国小说课程节选