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The best experiments often come from simple ideas and careful observation.
【解释】有腐草和粪料的土地,植物繁茂生长;清澈见地的河流,常常不会有鱼虾。君子应有包容世间善恶、雅俗、是非的胸襟,不可追求绝对的完美,而脱离实际。
We cannot choose the times, but we can choose how to respond to them.