Experts recommend that your ventilation system should provide at least one air change every hour.
专家推荐你的通风系统应该至少要每小时换一下气。
It is designed to change the air temperature and humidity within an area.
它是用来改变某一区域内的空气温度和湿度的。
Either way, both pollute the air, land, water and, don't forget, change the climate.
不管那一种方式都会污染空气、土壤和水源，不要忘了，还会改变气候。
Turbidity of the change started fresh air.
浑浊的空气开始变的清新。
Change is in the air as the energy motivates you.
因为这股能量刺激著你，改变四处皆是。
The air is too close. I' m hoping for a change.
太闷热了，希望天气能有所变化。
Besides, it can also correct the air valve position during air pressure change.
此外还能在预热空气压力变化时自动修正空气阀门位置。
The daily change of air humidity in surface layer is contrary to that of temperature.
近地层空气湿度的日变化与温度相反。
你需要换换空气。
The stale air seemed never to change .
宿浊难闻的空气，好象从来都没有换过一样。
To the sick the doctors wisely recommend a change of air and scenery.
生了病的话，医生要明智地劝告你转移个地方，换换空气。
The doctor advises a change of air.
医生建议换换空气。
The change of air brought her back to health.
易地疗养使她恢复了健康。
我需要换一个空气。
Is there a change in the air temperature?
再看周围的气氛有没有发生一些变化？
Don't worry. That was because of a change in air pressure.
请别担心。这是由于气压的改变引起的。
Exhaust air and safety change housing.
排风和安全更换用箱体。
At her repeated request he returned to his village for a change of air.
在她再三请求下，他回到了自己的村庄疗养身体。
That was because of a change in air pressure.
这是由于气压的改变引起的。
Air China blackout dates are subject to change without further notice.
以上限定日期若有变动，依中国国际航空公布为准，恕不另行通知。
Air China blackout dates are subject to change without further notice.
以上限定日期若有变动，依中国国际航空公布为准，恕不另行通知。
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