541 roller coaster

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今天我们要学的词是roller coaster。 Roller coaster, 是翻滚过山车的意思，可以用来指事件和情绪的时起时落，忽好忽坏。 "NBA star Kobe Bryant is having a roller coaster year," 美国篮球明星布赖恩特今年可以说是大起大落。 "It's a roller-coaster of emotions for the plane crash survivors," 坠机事件幸存者的情绪大起大落，很不稳定。 "Wall Street scored a small gain after a roller-coaster day," 华尔街当天的股票价格大起大落，最后收盘时小幅上扬。好的，今天我们学习的词是roller coaster...

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559 boil down to (09/4/5)
558 ground zero (09/4/5)
557 confide (09/4/5)
556 to gain traction (09/4/5)
555 binge (09/4/5)
554 twist (09/4/5)
553 demanding (09/4/5)
552 stay put (09/4/5)
551 roller coaster (09/4/5)
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