roller

"Roller coaster" 的雅思词汇解析如下：

词义

n. 过山车

搭配

ride a roller coaster

例句

Riding a roller coaster can be a thrilling experience for those who love adventure.

She screamed with excitement as the roller coaster reached the top of its first hill.

同义词

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

希望这些信息对你有所帮助。