There are several main reasons why old buildings should be torn down and replaced by new ones.

旧建筑物应该被拆除并被新建筑物取代，这有几个主要原因。

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So history reminds us that walls can be torn down. But the task is never easy.

因此，历史告诉我们藩篱可以被拆除，但我们仍然任重而道远。

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History reminds us that walls can be torn down. But the task is never easy.

历史提醒我们，墙是可以被推倒的，但这项任务从来都不是轻而易举地就可以完成的。

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Many houses that are standing are still wrecked and must be torn down.

VOA: special.2010.01.22

And in fact in one with the girl describing her side, she several times emphasizes this need for protection, need to be free from being torn down from people around them.

事实上像一个女孩子表达的那样，她好几次强调了需要保护的愿望，需要逃离那些打倒她的东西,逃离身边的人们。

麻省理工公开课 - 媒体、教育、市场课程节选

But given time and given the leadership that each of you can provide, the torn fabric of society will be woven together, stitch by stitch, choice by choice,".

VOA: standard.2009.10.12

Also, many stores will once again be torn up as new boutiques are put in place.

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One building is simply too dangerous to enter and may have to be torn down.

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And the laws of physics do not have to be torn up after all.

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