rotary/ˈroʊ.t̬ɚ.i/名词（同 traffic circle）The rotary at the intersection helps to keep traffic flowing smoothly.这个交叉口的环形交叉道有助于保持交通顺畅。/ˈroʊ.t̬ɚ.i/形容词（机器）有旋转部件的；旋转式的a rotary engine旋转式发动机想跟读，去练习
