function as的用法和样例：
例句
- A pragmatic theory that ideas are instruments that function as guides of action, their validity being determined by the success of the action.
工具主义一种实用主义理论，认为思想是指导行为的工具，行为的成功证明其手段合理 - The sofa can also function as a bed.
这沙发也可以当床。 - Some English adverbs function as adjectives.
英语中有些副词可作形容词用。 - Functioning as a receiver; receptive.
接受的起收受容纳作用的; 愿意接受的
