后备的英文：
in support

参考例句：

Backing storage
后备存贮器

Backup (underwriting) facility fee
后备(保险)项目费用

RNR (Royal Naval Reserve)
皇家海军后备队

The coach trains the junior varsity team to get into the varsity team's shoes when they graduate.
教练训练后备队来接替代表队中即将毕业的队员。

The commander brought up his reserved troops
司令员把后备队调了上来。

The commander brought up his reserve troops.
司令员把后备部队调了上来。

John made the second string on the football team.
约翰成了该足球队的后备队员。

John made the second string on the football team
约翰成了该足球队的后备队员。

Protecting the contents of an area of memory by writing to a backing store
通过写入后备存储器对存储器的内容的保护。

Magnetic tape: A sequential storage device that is widely used for back up storage.
磁带:广泛的用作后备贮存的顺序贮存装置。

support是什么意思：
v. 支撑；鼓励；赞成；支援；供养；证实
n. 支撑；帮助；拥护；支援

support an actor
作为一个演员的配角

singular support
奇异支集

a backer; a supporter
支援者

The support for the tent is rigid.
帐篷的支柱很坚固。

a member (or supporter) of the house of Hanover.
汉诺威家族的成员或支持者。