Watch your electricity usage as well.

同时也要注意你的用电习惯。

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Sure enough, less TV equals less electricity usage.

少看电视，用电当然就少了。

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This means that electricity usage is dependent on the temperature an independent variable.

这就表明电量的使用情况的多少是依赖于温度的影响的。

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Therefore, a family can reduce their CO2 footprint even further by off-peak electricity usage.

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"There are four items that make up almost 70% of our electricity usage, " she says.

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Electricity usage, perhaps the best barometer of economic activity, was essentially flat this summer on a month-to-month basis.

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