How many of the parts they want to replace to allow for future speed increases的翻译：什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

翻译结果1 翻译结果2 翻译结果3 翻译结果4 翻译结果5

他们要更换，以便为今后的速度增加的部分有多少

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