大家帮我翻译一下这题，谢谢！！

Once a gasoline meter broke at a filling station. Fortunately, there was an overflow clipper (a device that makes it possible not to overfill a tank).
An ACM-programmer came to this station and saw an announcement saying that the station didn't work properly. As he was meditating on what to do next, he noticed three empty cans at the station's counter. He thought: "If I fill the first can and then empty it to the second one, and then take the third one… Maybe, I'll be able to measure out the needed amount of gasoline?"
As usual, he began to think about a general formulation of the problem, forgetting the partial case: "How many different capacities can I measure out using these cans?"
Of course, it is forbidden to spill gasoline because of ecology reasons. Also, the station's owner requires that gasoline only be transferred from the storage tank to a can or between cans. The car's tank may be filled from one or several of the cans

是个计算问题，我简单帮您翻译了一下，仅供参考。

Once a gasoline meter broke at a filling station. Fortunately, there was an overflow clipper (a device that makes it possible not to overfill a tank).
一个汽油加油站的汽油计量表坏了，幸运的是这个油站装配了一个溢流截至阀。（一种安装在储罐中的防止溢流的装置）。

An ACM-programmer came to this station and saw an announcement saying that the station didn't work properly. As he was meditating on what to do next, he noticed three empty cans at the station's counter. He thought: "If I fill the first can and then empty it to the second one, and then take the third one… Maybe, I'll be able to measure out the needed amount of gasoline?"
刚好一个ACM(可能是美国计算机协会的简写）的程序员刚好来到这个加油站并且看到了这个加油站不能正常工作的告示。他正在考虑该怎么办的时候他注意到在这个加油站的柜台上放着三个空铁罐。他想：“如果我把第一个铁罐加满然后再倒入第二个铁罐里，然后用第三个。。。也许我就能计算出我需要添加的汽油量了吧？
As usual, he began to think about a general formulation of the problem, forgetting the partial case: "How many different capacities can I measure out using these cans?"