1N-COUNT 过山车;云霄飞车 A roller-coaster is a small railway at a fair that goes up and down steep slopes fast and that people ride on for pleasure or excitement. 过山车;云霄飞车
It's great to go on the roller coaster five times and not be sick.
坐了5次云霄飞车都没晕,真是太棒了。
2N-COUNT [usually singular]许多急转突变;忽好忽坏 If you say that someone or something is on a roller coaster, you mean that they go through many sudden or extreme changes in a short time. 许多急转突变;忽好忽坏 [journalism]
I've been on an emotional roller-coaster since I've been here.
自从我到了这里,情绪就起伏不定。
Over the last few years Japan's socialists have seen their electoral popularity take a roller-coaster ride.
在过去的几年里,日本社会党在选民中的支持率忽高忽低。
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