New technology may solve old problems, and it may also create new ones.

新技术可以解决老问题，也会创造新问题。

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For all its theoretical merits, a switch to NGDP targeting would throw up some new problems-and old ones.

虽然有诸多理论上的优势，转向NGDP指标仍会带来很多新老问题。

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The rebuilding of commercial centers in old cities often faces the problems of shortage of land, parking space and the special separation of the new buildings from the old ones.

旧城商业改造往往面临用地紧张、停车位不足和新建筑与旧城空间结构易脱离等问题。

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His games strike this magical balance between the excitement that comes from facing new problems and the swagger from facing down old ones.

NEWYORKER: Master of Play

Unfortunately, the new leaders still have to deal with all the same old problems: too few new drugs, too many old ones vanishing, and an environment where it is increasingly difficult to get new products to sell.

FORBES: Pfizer CEO Retires Suddenly