1.
Fresh air cleans the blood.
新鲜空气能净化血液。
2.
Analysis and Determination of Parameters for Performance Testing under Working Conditions for Air-air Energy Recovery Equipment
空气—空气能量回收装置性能测试工况参数的分析与确定
3.
Environmental Control of Hospital and Energy Conservation
医院空气空气环境的控制特点与节能
4.
Man cannot live without air.
人离开了空气不能生存。
5.
One cannot exist without air.
人没有空气就不能生存。
6.
the class of fliers which harness the air to their purpose,
它能自如地驾驭空气，
7.
The windows can keep the cold air out and the warm air in
窗户能阻挡冷空气入内和防止暖空气外流。
8.
Air at higher levels may remain warmer than that near the ground.
高层的空气可能比接近地面的空气较为暖和。
9.
Performance Study of Membrane-based Air to Air Enthalpy Exchanger;
静止式空气—空气全热交换器性能评价研究
10.
Study on Heat Exchange Performance of Air-to-Air Plate Heat Exchange Ventilator
空气—空气板式全热交换器热量回收性能的研究
11.
Will you sunder nitrogen from air?
你能从空气中把氮气分离出来吗？
12.
The exhaust gas from cars pollutes the air and they waste energy.
事实上，汽车尾气污染了空气，浪费能源。
13.
Energy-saving Analyses of Compressed Air Pretreatment Device in Air-jet Loom
喷气织机压缩空气吸气预处理的节能性分析
14.
Study on Thermal Performance of Evacuated Tubular Solar Air Collector with Inserted Tubes
内插式太阳能真空管空气集热器集热性能研究
15.
It is said that growing flowers can lift the spirit and nourish the soul, and can also cleanse the air.
说是养花能怡情养性，还能清洁空气。
16.
VRV Air Conditioner:Energy Saving's Cure-all or Trap?
变频冷气:空调节能之万能丹或陷阱?
17.
A comparison study of two types of solar air collector performance
两种太阳能空气集热器性能比较研究
18.
So air supports a balloon just as water does a ship.
正象水能够支承船那样，空气也能够支承气球。