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Age isn't how old you are but how old you feel.
年龄不是指你活了多久,而是指你感觉自己有多老。
The language of mathematics is universal; it transcends all cultural barriers.
永远不要成为房间里最聪明的人;如果你是,那么你进错了房间。
Coal enterprises must enhance their sense of social responsibility and achieve the unity of economic and social benefits.
The deep, personal material of the latter half of your life is your childhood.