复数：roller-coasters
n.
anything characterized by abrupt and extreme changes (especially up and down)
同义词：roller coaster
elevated railway in an amusement park (usually with sharp curves and steep inclines)
同义词：roller coasterbig dipperchute-the-chute
Roller coaster
Roller coaster
Roller-coaster.
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Roller-coaster-induced vertebral artery dissection.
Sweden's family policies and roller-coaster fertility.
The physical basis for the roller‐coaster hazard rate curve for electronics
The relationship between age and turnout: A roller-coaster ride
Managing the work–life roller-coaster: Private stress or public health issue?
Independence Sequences of Well-Covered Graphs: Non-Unimodality and the Roller-Coaster Conjecture
