DEWPOINT: The temperature to which the air must be cooled for water vapor to condense at a constant temperature and at a constant amount of water vapor.
(the air; must be cooled; L:The temperature) (water vapor; to condense; L:at a constant temperature and at a constant amount of water vapor)
the air water vapor
must be cooled to condense
L:The temperature
L:at a constant temperature and at a constant amount of water vapor