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improvement
英/ɪmpɹˈuːvmənt/
美/ˌɪmˈpɹuvmənt/
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01n.
进步, 改善, 利用
a change for the better; progress in development; the act of improving something; a condition superior to an earlier condition
WORD BY WORD
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a change for the better; progress in development; the act of improving something; a condition superior to an earlier condition