问题描述：
Life's like roller coaster, you're up you're down. Which means, however bad or good a situation is
Life's like rollercoaster, you're up you're down. Which means, however bad or good a situation is, it'll change.
Life's like rollercoaster, you're up you're down. Which means, however bad or good a situation is, it'll change.
问题解答：
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