noun 下载 🔗分享 维护,保养 Maintenance; the act or effort of keeping something in good and working condition. Examples : "Regular upkeep of the school playground equipment is important to prevent accidents. " 定期维护学校操场的游乐设施对于预防事故非常重要。 property building utility condition 与AI对话词汇游戏阅读练习
verb 下载 🔗分享 维护,保养。 To maintain (something) or keep it in good repair. Examples : "Do you know how to upkeep a boat?" 你知道怎么维护保养船只吗? property building work 与AI对话词汇游戏阅读练习