Lorries run empty for almost a quarter of the miles they cover in the UK, according to data from the Department for Transport.

根据英国运输部门的数据，运输卡车所行驶的路程中有大约四分之一是空载的。

youdao

I'm going to give a name to that. And what you see there is I'm going to call divisors initially an empty tuple, something has nothing in it. Right here. And then I'm going to run through the same loop as before, going through this set of things, doing the check.

你们可以看到这里,我初始化一个空的元组,名为divisiors，这里，然后我会去运行,跟以前一样的循环，遍历这个集合内的东西,然后做检查，现在我要做的是，每次我找到了一个除数我要把它收集起来。

麻省理工公开课 - 计算机科学及编程导论课程节选

Of course, trains can't run 24 hours a day and the companies don't want to run empty trains.

BBC: Pressure is on for train companies during Olympics

With inflation now under control, China is stocked with other possible monetary policy actions to help growth in 2012, as opposed to the central banks of the U.S., Europe and England, which have run empty.

FORBES: Chinese Monetary Discipline Sows Seeds Of New Growth

Dan Thompson helps to run the Empty Shops Network, and his own business has been making use of empty retail spaces for over a decade.

BBC: Why some zombie businesses are good for the High Street