美国的空气(TheClimatesoftheUnitedStates)

　　fortably warm, and fall temperatures are pleasantly cool.

　　years ago, people in the cold parts of the united states didn't often get fresh vegetables and fresh fruits (新鲜水果) during the winter. today, however, trucks and trains carry fruits and vegetables very quickly to all parts of the united states.

　　in this way, americans "send their climates" to people in other states.

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