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Laughter and tears are both responses to frustration and exhaustion. I myself prefer to laugh, since there is less cleaning up to do afterward.
真正的困难不在于构思新想法,而在于摆脱旧观念。
可怜的是那些快乐取决于他人许可的人。
释义:要了解过去和现在,以便灵活应变,适应变化。