英语单词“refine on (或upon)”的翻译、意思、用法、释义-英汉词典

单词	refine on (或upon)
释义	refine on (或upon)1.■推敲；改进；使…更细致完善：They have refined on their teaching methods for the last few years.他们在过去几年中改进了他们的教学方法。
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