an example or instance of improving or being improved
进步(或改善、增进)的实例
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an improvement in East-West relations .东西方关系改善的实例。
[mass noun]the action of improving or being improved
进步,改善,增进
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there's still room for improvement .还有改进的余地。
a thing that makes something better or is better than something else
帮助改善之物
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home improvements 家居改善物品
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it's an improvement on the last cake I made .这比我上次做的蛋糕好多了。
"late Middle English