You can have gross profit, which is the difference between the revenue and cost.

你可以说毛利，意思是营业额和成本之差。

Some deals are made months or even years before electricity is delivered, as suppliers and customers need clarity over revenues and costs.

由于供应商和客户需要明确收入和成本，一些交易在输送电力的数月甚至数年前就已达成。

Even if they keep revenues and costs under control, CEOs are discovering what their predecessors knew all too well: inflation plays havoc with the balance-sheet.

即使他们能够控制收入和成本，首席执行官们也发现了他们的前辈们再了解不过的事情：通货膨胀会严重破坏资产负债表。