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学校负担这些大楼的供热和维修费用。
英语解释:the act of keeping sth in good condition by checking or repairing it regularly 维护;保养:

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学校负担这些大楼的供热和维修费用。
英语解释:the act of keeping sth in good condition by checking or repairing it regularly 维护;保养: