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up grade的英文翻譯是什么意思，詞典釋義與在線(xiàn)翻譯：
英英釋義
名詞 upgrade:
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an upward slope or grade (as in a road)
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software that provides better performance than an earlier version did
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a reservation that is improved
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the property possessed by a slope or surface that rises
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hardware that provides better performance than an earlier version did
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the act of improving something (especially machinery) by raising it to a higher grade (as by adding or replacing components)
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rate higher; raise in value or esteem
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to improve what was old or outdated
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give a promotion to or assign to a higher position
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get better travel conditions
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give better travel conditions to
