It can make the time computing research project and expense running the computers system decrease.

这将会减少研究项目的计算时间，降低计算机系统的运行费用。

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Running a car is a big expense.

养一辆车开销很大。

《牛津词典》

The improvements in expressiveness and structure might allow us to keep systems running longer, and to incrementally improve them without incurring the expense of a complete rewrite.

表达以及结构方面的提高允许我们保持系统运行更长的时间，并且不会带来完全改写的开销就可以增量地对其进行提高。

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First of all, power is becoming the largest operating expense for running large IT systems.

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And in making these calculations, Mr Malkiel plays fair: he deducts the typical running expense (one-fifth of 1%) charged by an index fund.

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We talk about the expense of just running your automobile.

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