| 释义 |
roller coasterBrE /ˈrəʊlə kəʊstə(r)/ NAmE /ˈroʊlər koʊstər/ noun a track at a fairgroundthat goes up and down very steep slopes and that people ride on in a small train for fun and excitement （游乐场的）过山车，环滑车◆ a roller -coaster ride 乘坐过山车a situation that keeps changing very quickly 不断变化的局势◆ The last few weeks have been a real roller coaster . 过去的几个星期，形势真是变幻莫测。 |