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失去游戏机会的猴子,长大后可能变得十分木讷,有些甚至失去求偶及生小猴子的本能;没有经过玩耍“彩排期”的少年,可能变成木讷的成人。
Monkeys who lose their chances of playing may become very stiff when they grow up, some may even lose the instincts of courtship and monkey births; juveniles who have not played “rehearsal” may turn into dull adults.