零下能不能凝结空气呢英语？

The answer to whether air can condense in subzero temperatures is yes. However， it is a little more complicated than simply reaching a certain temperature.

When the temperature drops， molecules in the air slow down， and their kinetic energy decreases. This causes them to become more compact and to pack closer together. Air， while composed mainly of nitrogen and oxygen， still has water vapor， which plays an integral role in its ability to condense.

Once temperatures reach below freezing， water vapor within the air starts to become more solid， forming ice crystals. The process of condensation then begins as the water droplets start to stick to the ice nuclei. The result is the formation of tiny water droplets， which are what we see as condensation.

Different temperatures and air pressure levels cause the rate at which water vapor can condense to vary. Instability in the atmospheric environment can also be a factor in air conditioning.

In short， while air itself cannot condense， water vapor within it can. This is why we see our breath on a cold morning or why and why surfaces can become covered with frost. As temperature continues to drop， the amount of moisture in the air decreases， making it less likely for condensation to occur.