學(xué)個(gè)詞 Learn A Word:541 roller coaster

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今天我們要學(xué)的詞是roller coaster。 Roller coaster, 是翻滾過山車的意思，可以用來指事件和情緒的時(shí)起時(shí)落，忽好忽壞。 "NBA star Kobe Bryant is having a roller coaster year," 美國(guó)籃球明星布賴恩特今年可以說是大起大落。 "It's a roller-coaster of emotions for the plane crash survivors," 墜機(jī)事件幸存者的情緒大起大落，很不穩(wěn)定。 "Wall Street scored a small gain after a roller-coaster day," 華爾街當(dāng)天的股票價(jià)格大起大落，最后收盤時(shí)小幅上揚(yáng)。好的，今天我們學(xué)習(xí)的詞是roller coaster...