weiweivivianweiwei
roller coaster 过山车 roller coaster roller coaster n.（名词） A steep,sharply curving elevated railway with small open passenger cars that is operated at high speeds as a ride,especially in an amusem...
时间不等人了
switchback：翻滚过山车，多用于英国。scenic railway：过山车，用法比较过时。big dipper：过山车，也有北斗七星的意思。roller coaster： 尤指游乐场的云霄飞车，最常用。
