1. 成分;(烹调的)原料
    Ingredients are the things that are used to make something, especially all the different foods you use when you are cooking a particular dish.

    e.g. Mix in the remaining ingredients.
           混入其余的原料。

2. 要素;因素
    An ingredient of a situation is one of the essential parts of it.

    e.g. The meeting had all the ingredients of high political drama...
           这次会议具备了作为高度戏剧性的政治事件的一切要素。
    e.g. I think that is one of the major ingredients in his success.
           我认为那是他成功的主要因素之一。