reactive or functioning or allowing movement in two usually opposite directions
bidirectional详细解释
bi.di.rec.tion.al adj.（形容词）Moving or operating in two usually opposite directions:双向的：通常以相反的两个方向移动或运行的：例句：bidirectional data flow; a bidirectional microphone.双向数据流；双向麦克风 【引伸】 bi.direc.tional.ity 【引伸】 bi.direc.tionally adv.（副词）
