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根本不稳固必然会央及枝叶。行为不守信必然会损害声誉。
The sun did not know how beautiful its light was until it was reflected off this building.
有人问我什么是幸福,我回答说:不奢求非必需之物。
数学是一种思维方式,而不仅仅是一堆事实。