Question

backup n.后备 (1) 当主系统不能工作时，后备系统立即投入工作代替之。(2) 对顾客我们提供免费配套服务。(3) 备份作业驻留在主服务器上。 Use the noun backup when you talk about extra assistance or help. Police officers call for backup when they're not sure they can handle a situation on their own, and store cashiers need backup when things get busy and customers start lining up. Another kind of backup is the one you do on your computer — in this case, a backup is the process of copying your data in case you lose the original files.

Accepted Answer

英 ['bækʌp] 美 ['bækʌp] (1) When the main system fails, the backup system take over.(2) We offer a free backup service to customers.(3) The backup job resides on the primary server. Backup is what someone gives when they help or support you. A brand new doctor might need some backup in the emergency room for the first few weeks. 1[N-VAR 可变名词]（物资、人员等的）支持，辅助 Backup consists of extra equipment, resources, or people that you can get help or support from if necessary. There is no emergency back-up immediately available...手头无法获得应急支持。Alternative treatments can provide a useful back-up to conventional treatment.替代疗法能为传统的治疗提供有效的辅助。2[N-VAR 可变名词]备用品；后备计划 If you have something such as a  second piece of equipment or set of plans as backup, you have arranged for them to be available for use in case the first one does not work. Every part of the system has a backup...系统的每个部分都有备用元件。Computer users should make regular back-up copies of their work.计算机使用者应该定期对自己的工作进行备份。

英语单词	backup
英美音标	英 ['bækʌp] 美 ['bækʌp]
中文释义	n.后备
英语例句	(1) When the main system fails, the backup system take over. (2) We offer a free backup service to customers. (3) The backup job resides on the primary server.
中文例句	(1) 当主系统不能工作时，后备系统立即投入工作代替之。 (2) 对顾客我们提供免费配套服务。 (3) 备份作业驻留在主服务器上。
vocabulary简明	Backup is what someone gives when they help or support you. A brand new doctor might need some backup in the emergency room for the first few weeks.
vocabulary扩展	Use the noun backup when you talk about extra assistance or help. Police officers call for backup when they're not sure they can handle a situation on their own, and store cashiers need backup when things get busy and customers start lining up. Another kind of backup is the one you do on your computer — in this case, a backup is the process of copying your data in case you lose the original files.
柯林斯解释	1 [N-VAR 可变名词]（物资、人员等的）支持，辅助 Backup consists of extra equipment, resources, or people that you can get help or support from if necessary. There is no emergency back-up immediately available... 手头无法获得应急支持。 Alternative treatments can provide a useful back-up to conventional treatment. 替代疗法能为传统的治疗提供有效的辅助。 2 [N-VAR 可变名词]备用品；后备计划 If you have something such as a second piece of equipment or set of plans as backup, you have arranged for them to be available for use in case the first one does not work. Every part of the system has a backup... 系统的每个部分都有备用元件。 Computer users should make regular back-up copies of their work. 计算机使用者应该定期对自己的工作进行备份。

Backup System Back Up Support Emergency Extra Computer Case