noun 下载 🔗分享 候补，备用，后备。 A reserve or substitute. Examples : "If the goalkeeper is injured, we have a backup." 如果守门员受伤了，我们还有个候补队员。 aid system technology technical computing 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 备份，副本 A copy of a file or record, stored separately from the original, that can be used to recover the original if it is destroyed or damaged. Examples : "After the power failure, we had to restore the database from backup." 停电后，我们不得不从备份中恢复数据库。 computing technology business 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 堵塞，积聚。 An accumulation of material caused by a (partial) obstruction or (complete) blockage of the flow or movement of the material, or an accumulation of material that causes an overflow due to the flow being greater than the maximum possible flow. Examples : "The accident caused a mile-long backup on the highway." 事故导致高速公路上堵塞了长达一英里的车流。 material environment disaster technical industry 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 支援，后援。 (law enforcement) reinforcements Examples : "The police called in backup to handle the large crowd. " 警察叫了支援来控制住大批人群。 police law military 与AI对话词汇游戏阅读练习
adjective 下载 🔗分享 备用的，后备的. Standby, reserve or extra. Examples : "I am only a backup player." 我只是个备用队员。 technology computing business electronics technical 与AI对话词汇游戏阅读练习
adjective 下载 🔗分享 备用的，后备的 That is intended as a backup. Examples : "Make a backup copy of that file." 为那个文件做一个备用拷贝。 technology computing technical device system utility aid 与AI对话词汇游戏阅读练习
adjective 下载 🔗分享 备用的，后备的 Supporting, reinforcing; of or related to accompaniment Examples : "The teacher's clear explanations were a backup to the textbook's information. " 老师清晰的讲解是对课本信息的补充和加强。 aid function technical 与AI对话词汇游戏阅读练习
