例句
英语六级真题
  • "Supplying power to trains in this way would offer the shortest distance from well to wheels," he says, "with the least amount of energy lost."
    2018年12月六级真题(第二套)听力 Section C
柯林斯高阶英汉双解学习词典释义
英英词典释义
  • Noun
    1. forces that provide energy and direction;
    "the wheels of government began to turn"