Three As三个自动化threenum.三n.三；三个adj.三个的three tours a day每日三班three step method三台阶法three tone signal三音信号three lap winding三圈绕组three ball method测量Three conversions三化three-car trick用三张纸牌的猜牌赌博three grain pilaf综合谷物炒饭threefold quality三重性three evil forces三股势力