vt.成为…的原因（cause的现在分词形式）； 双语释义：n.(名词)[C]原因,起因 sth which produces an effect; a person, thing, or event that makes sth happen[U]缘故,理由 sth that provides a satisfactory reason for an action[C]事业,原则,目标 aim, principle or movement that is strongly defended or sup