词组 | a roller coaster |
释义 | Idiom a roller coaster a situation which changes suddenly and often between being good and being bad.The Norwegian stockmarket has been on a roller coaster during the past 18 months.What the book does describe very well is the emotional roller-coaster of puberty. roller coasterA series or period of drastic changes that occur without warning. After she graduated from college, her life became a roller coaster filled with ups and downs as she tried to establish herself as a fashion designer. |
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