Stock prices took a roller-coaster ride this week -- down one day,up the next.

VOA: special.2009.08.21

She was meant to remember. She faced that possibility as she might the toy street from a high balcony, roller-coaster ride, feeding time among the beasts in a zoo, any death wish that can be consummated by some minimum gesture.

她生来就是为了回忆的，她面临着一种可能性,当她在一个高高的阳台看着玩具街时，当她坐过山车时，当她在动物园里喂野兽时，通过一个小小的手势。

耶鲁公开课 - 1945年后的美国小说课程节选

Each week,the show took them - and viewers - on an emotional and mind-bending roller coaster ride, through a dizzying loop of supernatural forces, armed conspirators and,of course,romance."

VOA: standard.2010.05.25

So this past week in my house it's been like a roller coaster ride.

NPR: Ask Amy: Responding to the Thin Envelope

"It's like being on a roller coaster with no brakes, " said U.S. Army Sergeant Randy Whelchel.

CNN: Troops in Bosnia

The last several years have been a roller coaster, but not one that was any fun.

FORBES: Fed Down To Last Out, Bernanke Set To Go Down Swinging