Swartz in 2011, two years before his death (source)
历史经验告诉我们，从光伏到锂电，中国硬科技产业的爆发无一不遵循“政策先导、资本跟进、应用牵引、集群爆发”的路径。
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by building up a tree of which queries depend on the results of which other ones,
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Torpedoes can also be delivered by aircraft, usually to strike at submarines where airborne missiles can’t reach. Aircraft typically use missiles to strike surface ships, as an aircraft would need to make a risky close approach to get within torpedo range.