substance /ˈsʌbstəns/ n. 1.［c］ & ［u］（化学）物质: Water, ice and snow are the same substance in different forms. 水、冰和雪是同一物质的不同形式。［考句］Vitamins are complex substances that the body requires in very small amounts.维生素是人体所需要的微量复杂物质。 2.［u］实质: lose the substance for the shadow 舍本求末 3.［c］要旨，基本内容: the substance of a speech 讲话的要旨 in substance 本质上，基本上，大体上：I agree with you in  substance. 我基本上同意你的意见。 4.根据，内容：have substance 有道理，有根据：Our fears had substance — the house was indeed on fire. 我们的害怕是有道理的，房子确实失火了。