在能源价格低廉的年代，房屋建筑商并不太担心未密封的裂缝。

Back in the days when energy was cheap, home builders didn't worry much about unsealed cracks.

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那些贫穷的、需要帮助的少年兴奋地发现，在拐角处有一家商店，他们可以买到价格低廉的自行车。

Those poor and needy teenagers were excited to find a shop at the corner where they could buy affordably priced bikes.

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一项价格低廉的测试就能够解决这个问题。

An inexpensive portable test could solve that problem.

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