一旦关闭这只阀门切断室内水路后，立即到室外打开水龙头，排掉积存在管子里或者水龙头里的水，以确保无可结冰的物质。

Once the water is shut off inside, go outside and open the outside taps as well. This will drain any water remaining in the pipe or in the tap, so there's nothing to freeze.

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天气好的话，用背巾背着宝宝到室外走一走。

A walk outdoors, if weather permits, with your baby in a sling.

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盆栽植物应经耐寒锻炼才能移植到室外。

Potted plants should be hardened off before planting out.

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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