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）。