Extremely cost effective design. .

低成本设计。

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Although they cannot store as much energy for a given weight or volume as newer technologies, they can be extremely cost-effective.

虽然在一定重量和体积下，它们的储能不及新一代技术，但是它们也许是非常符合成本效益的。

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Helping such firms grow is an extremely cost-effective way to create jobs, argues Mr Harthorne; the first class of finalists have already hired over 500 more people than the 330 they began with.

帮助这些企业成长是创造就业的成本效益极高的方式，霍桑说，第一批决赛选手刚开始一共只雇佣了330人，而现在他们雇佣了500多人。

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Web-based instruction for teachers is one of the most important because it can be an extremely cost-effective way to train new teachers, and it may be the only way we can possibly fill the huge demand for qualified teachers.

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