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The machinery requires constant maintenance.
这些机器需要经常保养维修。
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Maintenance for a given body design of an organism is relatively constant.
对一个有机体特定主体设计的维持是相对恒定的。
youdao
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Maintenance for a given body design of an organism is relatively constant.
对一个有机体特定主体设计的维持是相对恒定的。
youdao