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我们必须从一开始就考虑产品的生命周期终结问题。
Science is the antidote to superstition.
A shortage is a sign that somebody is keeping the price artificially lower than it would be if supply and demand were allowed to operate freely.
我写作是为了理解自己的生活。
我不是说唱歌手,我是一个活着的传奇。