朋友可以来来去去,但精神却永远常驻。
Friends can come and go, but banners hang forever.
在数学中,旅程和目的地同样重要,因为正是通过发现的过程,我们才能真正学习。
Gunpowder made me understand the transience and eternity of life. 火药让我理解了生命的短暂与永恒。