roller-coaster

英 ['rəʊlərk'əʊstər] 美 ['rəʊlərk'əʊstər]

• n. 过山车; 云霄飞车; 惊险游戏车

英英释义

名词 roller coaster:

1. anything characterized by abrupt and extreme changes (especially up and down)

2. elevated railway in an amusement park (usually with sharp curves and steep inclines)