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可持续性不是一种选择,而是我们对后代的责任。
Rich bachelors should be heavily taxed. It is not fair that some men should be happier than others.
The truth is at once simpler and more complicated.
抗击贫困的关键是将它分解成更小、更易管理的问题。
我们必须相信,我们在某事上有天赋,并且必须实现它。