动词短语
中文翻译：在
同义词：
['on the basis of', 'enhance', 'improve upon']
例句：
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1.The new design is a great improvement on the old one.
新设计是对旧设计的极大改进。
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2. The teacher suggested that we could improve on our presentation skills.
老师建议我们可以提高我们的演讲技巧。
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3. The company plans to improve on its customer service in the next quarter.
公司计划在下一季度改善其客户服务。