They found that just one tree can save a city hundreds of dollars over its lifetime.

他们发现，一棵树在其一生中可以为一个城市节省数百美元。

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Over its lifetime, a program will be handled by many pairs of hands and eyes.

在它的整个生命周期里,一个程序可能会被许多人阅读或修改。

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Over its lifetime, the project has accumulated many documents, most of them in Word format.

经历了这几年，该项目已经积累了许多文档，大多数都是word格式。

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Consider: A long Treasury bond bought today is destined to earn 4.7% a year over its lifetime.

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Over its lifetime, the Civic will emit less pollution than is produced by spilling a teaspoon of gasoline on the ground.

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"Its costs are vastly over-stated by its opponents, amounting only to 0.5% of the defence budget over its lifetime, " he told MPs.

BBC: Sir Menzies warns not to 'rush' defence review