sight oil gauge

例句：

1. 1. The sight oil gauge onthe truck indicates that it has enough fuelto reach the next town.
   卡车上的视油表显示它有足够的燃油到达下一个城镇。
2. 2.The engineer used a sight oil gauge tocheck the level of oil in the engine.
   工程师使用视油表检查发动机中的油位。
3. 3. The sight oil gauge showed that thetank was running low, so they neededto refuel immediately.
   视油表显示油箱已空，所以他们需要立即加油。