- 释义：
- n. 剧变；动乱
- 例句：
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It was faced with the greatest social upheaval since World War Ⅱ.
它面临第二次世界大战以来最大的社会动乱.
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And here lie the seeds of the whole subsequent upheaval.
这就包含着随之而来的全部变革的萌芽.
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Having a baby will mean the greatest upheaval in your life.
有了孩子意味着你的生活要发生重大的变化。
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