noun 下载 🔗分享 维护者，管理者。 Someone who keeps or upholds something; a steward. Examples : "He become the maintainer of the software project." 他成为了这个软件项目的维护者和管理者。 job organization business society government 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 维护人员，保养员 A person who does maintenance work. Examples : "The maintainers keep the school building clean and safe. " 维护人员负责保持学校建筑的清洁和安全。 job service person work technical machine 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 保持器 A device used to keep teeth in a given position. Examples : "After getting his braces off, the dentist fitted my little brother with retainers, also called maintainers, to keep his teeth straight. " 摘掉牙套后，牙医给我弟弟装了保持器，也就是位置保持器，来保持他的牙齿整齐。 medicine device body 与AI对话词汇游戏阅读练习
