高额的电费账单表明供暖系统较差或者是隔热材料不好。

High electricity bills point to a poor heating system or bad insulation.

《柯林斯英汉双解大词典》

现在他们实在很想看看他们的电费账单。

Now they're actually eager to see their electricity bills.

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如果一个家庭产生的电力比它所使用的要多，那么电费账单就是零。

If a home generates more power than it uses, the bill is zero.

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