Using alternative fuels and improving energy efficiency is thus both an ecological necessity and a technological challenge.

因此，使用替代燃料和提高能源效率既是生态需要，也是技术挑战。

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The supply and the using efficiency of the IWC restrict the growth of field irrigative scale and affects the security of food provision.

农田水利基础设施的供应及使用效率制约着农田灌溉规模的增长，影响着粮食供给的安全性。

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Now China ranks the antecedency in the world in the using efficiency and freight amount per kilometre.

目前中国铁路使用效率及平均每公里货运量，均位居世界前列。

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More consumers are also using high-efficiency washing machines, which clean with relatively little detergent.

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Riding on cutting-edge technologies such as flex oDSP, super SD-FEC, and flex modulation format, this field trial achieved a record-breaking transmission distance of 1, 500 km using a super-channel PDM-16QAM-based high spectral efficiency solution, and a second record-breaking transmission distance of 3, 325 km using a super-channel Nyquist PDM-QPSK-based ultra-long-haul solution.

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One of the early papers to come out of the project is a look at how the city of Busan, in South Korea, is using cloud-based city services to improve efficiency, reduce emissions and serve its residents better.

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