A surge in LED lighting, cleaner car engines and smarter fridges round the world has helped create an energy saving market worth at least $310bn a year, new figures suggest.
新數(shù)據(jù)顯示，LED照明、清潔汽車(chē)發(fā)動(dòng)機(jī)以及智能冰箱在全球的大幅增加，幫助締造了一個(gè)每年規(guī)模至少為3100億美元的節(jié)能市場(chǎng)。
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