He first tried to use water currents hydro power on a small scale, but said the experiment became too expensive.

他最开始尝试小规模水流发电，但是，他说试验成本太高了。

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But Dr. Caldeira says that small-scale testing — perhaps an experiment intended to slightly cool the Arctic — could be safer than the alternative.

但卡德拉教授则认为，小范围的测试——可能对北极进行小幅降温的实验——是更安全之举。

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The experiment aimed to make reference to design a rural small-scale centralized or distributed defluoridation water supply equipment.

试验旨在为设计一套农村小型集中式或分散式除氟供水设备提供参考。

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In their quest to make small-scale satellites ever more accessible and capable, the company has invested its own time and money in an experiment combining engineering know-how with lateral thinking and an entrepreneurial wiliness to take a chance.

BBC: For economic inspiration, look to space

Before the experiment in the hanger could begin, researchers calculated the pressures the house would experience in a small-scale study conducted at the University's Boundary Layer Wind Tunnel Laboratory -- which has over 40 years of expertise testing high-rise buildings and bridges.

CNN: Engineering a hurricane-proof roof