名词
中文翻译：九倍
同义词：
['ninth-power', 'ninefold']
例句：
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1.The number of students in the class is ninefold that of last year.
班级学生人数是去年的九倍。
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2.The scientists discovered a ninefold increase in the rate of growth.
科学家们发现增长率提高了九倍。
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3. The team achieved their goal with a ninefold improvement in performance.
团队以性能的九倍提升完成了目标。