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解释:辅与车互相依存,嘴唇没有了,牙齿就要受寒。
"The past is a shadow that follows us, but it does not have to define us."
The proper study of psychology is not what the mind is, but what the mind does.
国际政治是一个残酷而无情的舞台,各国不断努力最大化自己的权力和安全。