如果你在室外跑步，欣赏周围的环境，感激得到与大自然互动的机会。

If you're running outdoors, take in your surroundings and appreciate the opportunity to interact with nature.

youdao

花时间逛商场。如果天气不允许你在室外行走，那就可以换作逛商场。

Spend Time at the mall -if the weather doesn't allow for outdoor strolls, you can just take walks in malls instead.

youdao

你的身体，并有必要重新每两个小时如果你在室外，包括任何时间，你的车中。

And that it's necessary to reapply every two hours if you're outdoors, including any time spent in your car.

youdao

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