the cost or process of keeping sth in good condition 保养（费）；维修（费） SYN maintenance
Tenants are responsible for the upkeep of rented property.
承租人应负责维修租用的房产。
~ (of sb/sth) the cost or process of giving a child or an animal the things that they need 抚养（费）；喂养（成本）
He makes payments to his ex-wife for the upkeep of their children.
他向前妻支付子女的抚养费。