Some manufacturers are pushing cars to new levels of fuel efficiency.

VOA: special.2010.11.17

Now, we concluded last week at looking at sorts and efficiency, some new notation called asymptotic notation and we'll continue that story today.

上周我们着眼于排序和效率问题，并提出一些渐近线的新符号,今天我们将继续讨论相关内容。

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After Congress mandated new efficiency standards for washing machines in 2001, manufacturers responded.

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Over the last three years, we negotiated the toughest new efficiency standards for cars and trucks in history.

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Meanwhile, Mercedes-Benz has set new efficiency benchmarks in the premium segment with its newly developed V6 and V8 engines.

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