roller coaster
Longman Dictionary of Contemporary English 5++LDOCE 5++ˈroller ˌcoaster noun [countable] 1. DLOa track with very steep slopes and curves, which people ride on in small carriages at fairs and amusement parks 过山车，云霄飞车 →5 see picture at 见图 amusement park2 CONTROL#a situation that changes often 不断变化的情况 Their relationship was an emotional roller coaster. 他们的感情时好时坏。
Examples from the Corpus
roller coaster• All entrepreneurs do it from time to time, just as you would on a roller coaster.• Soon the road resembles a roller coaster track.• I would like to get off the emotional roller coaster I've been on.• This powerful range of feelings, this emotional roller coaster, is normal.• When you buy stock in a company, you are volunteering to ride the roller coaster of risk and rewards.From Longman Business Dictionaryroller coasterˈroller ˌcoaster noun [singular] journalismFINANCE when there are large up and down movements in the prices of shares, currencies etc within a short period of timeAfter a roller-coaster day, the dollar was down against the pound but up moderately against the yen.ˈroller ˌcoaster nounChineseSyllable
curves, Corpus with and very a steep Business slopes track
roller coaster
ˈroller ˌcoaster
noun [countable]
1. a track with very steep slopes and curves, which people ride on in small carriages at fairs and amusement parks
2. a situation that changes often:
Their relationship was an emotional roller coaster.
ˈroller ˌcoaster
noun [countable]1. a track with very steep slopes and curves, which people ride on in small carriages at fairs and amusement parks
2. a situation that changes often: