But take billions of warm and cold molecules mixed together, and the chances that all the cold ones will wander toward the refrigerator and all the warm ones will wander away from it are virtually nil.

• 但是，拿上亿个混在一起的冷热分子举例的话，所有的冷空气分子朝冰箱游去的可能性和所有的热空气分子游离开冰箱的可能性实际上都等于零。