admin英譯中,急求
If a person continues to sleep,he or she enters anew stage,a more active stage.The body goes through several changes：the brain temperature rises,the amount of blood in the brain increases,the body becomes very,very still,and the brain goes from being very inactive to being active.And as the brain becomes more active,the eyes begin to move rapidly.When the eyes begin to move,that is a sing of another change-the change is that the person is dreaming.
Throughout the night,people have both a passive and an active sleep,the brain rests,then it becomes active,then dreaming occurs.The cycle is repeated：the brain rests,then it becomes active,then dreaming occurs.This cycle is repeated several times throughout the night.During eight hours of sleep,people dream for a total of one and a half hours on the average.
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