three no三不穿(不戴乳罩、不系袜带、不穿三角裤衩)threenum.三n.三；三个adj.三个的three taps on drum击鼓三声three goals to two3比2three-reprcsents三个代表three-cella plan三正殿式平面Three No principle三不原则threefold integral三重积分three-axis force三维力three dipole model三偶极子模式three-tank water三容水箱three-wheel pump三轮泵