奥利奥baby
主要成分；基本成分The chief constituent;the fundamental ingredient.焦炭的主要成分是碳。Coke consists mainly of carbon.面包的主要成分是面粉。Bread is chiefly made of flour.这种饮料的主要成分是橘子汁。The basis of this drink is orange juice.以朗姆酒为主要成分的饮料A drink with a rum base古人认为勇敢是美德的主要成分。The ancients counted courage as the main part of virtue.有些颜料是以油脂作为主要成分。Some paints have an oil base.冰淇淋的主要成分是牛奶和糖。Icecream is chiefly made of milk and sugar.这个化合物的主要成分是怎样构成的？What forms the basis for this compound?立德炸药一种主要成分为苦味酸的炸药An explosive consisting chiefly of picric acid.
兔几小兔几
主语：Subject谓语：Predicate宾语：Object direct object(直宾) indirect object(间宾）宾补：Object complement表语：Predicative定语：Attributive状语：Adverbial
