在混合的过程中，也要加入空气。
During the mixing process, air is also introduced into the mix.
混合后的冰淇淋在冷冻成型过程中会加入空气。
Ice cream mixtures have air pumped into them as they freeze.
在温度不变时，通过加入水汽而使空气达到饱和。
With the temperature unchanged, the air is made to reach condensation by adding water.
热能通过气体在空气中的直接燃烧而加入到空气中去。
Energy is added to the air by direct combustion of gas in the air.
加湿：在空气内加入水气。
加湿：在空气内加入水气。
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