Houses built before 1939 use about 50% more energy per square foot than those built after 2000, mainly due to the tiny cracks and gaps that expand over time and let in more outside air.

1939年以前建造的房屋每平方英尺消耗的能源比2000年以后建造的房屋多50%，这主要是由于微小的裂缝随着时间的推移而扩大，更多的外部空气进入了裂缝。

youdao

The outside air was heavy and moist and sultry.

户外的空气阴沉、潮湿而闷热。

《柯林斯英汉双解大词典》

Infiltration heat from warm outside air through small holes, cracks, and door seals.

由外部通过小孔、裂缝和门的密封圈而进入的渗入热。

youdao

Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving.

VOA: special.2009.02.09

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

The inside of the box will stay several degrees cooler than the outside air temperature.

VOA: special.2009.11.30

There are often multiple 30-minute rounds, with breaks in-between to let the outside air in and drink water.

BBC: The origins of bathhouse culture around the world

This is 10 knots slower than "book, " but on this leg the outside air temperature was 5 degrees Celsius higher than standard.

FORBES: Beating America's Airlines

Energy is generated by the body's adjustments to differences in temperature between the skin and the outside air, which can be harvested.

WSJ: Harnessing Energy From the Body to Power Devices