ingredient          
noun [ C ] uk/ɪnˈɡriː.di.ənt/ us/ɪnˈɡriː.di.ənt/
B1 (食品的)成分,原料
a food that is used with other foods in the preparation of a particular dish
  The list of ingredients included 250 g of almonds. 清单上列出的原料包括250克的杏仁。 
 B2 (成功的)要素,因素
one of the parts of something successful
  Trust is a vital ingredient in a successful marriage. 信任是婚姻幸福的重要因素。 
 - More examples
 - When cooking the sauce, don't forget that all-important ingredient, fresh basil.
 - You mix all the dry ingredients together before you add the milk.
 - He created a wonderful meal from very few ingredients.
 - This tiny capsule contains two types of effective painkilling ingredients.
 - The exact ingredients of Coca Cola are a trade secret.