在许多年中，纽约市的帝国大厦是世界上最高的楼房。
For many years the Empire State building in New York City was the tallest building in the world.
在许多年中，即包括前往阿拉斯加到火的北极光，试图研究这一现象的科学原理火箭。
In many years, that includes trips to Alaska to fire rockets into the aurora borealis in an attempt to study the phenomenon's scientific principles.
它们要求在今后许多年中采用谨慎的逐步解决的方式。
They require a careful step-by-step approach over many years.
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