arrown.箭；箭头arrow diagram向量图,指示图,箭头图,矢线图,网格图arrow of time时间流向arrow network箭头网络arrows of time时间之矢arrow-poison[化] 箭毒,[医] 箭毒arrow-headedadj.箭头形的；楔形的；后掠的；镞状的arrow notation箭头表示法arrowhead scale箭头介壳虫Arrow relations箭头关系arrowhead clasp箭头形钩子