右边的服务器(备用服务器)称为“备用”集群成员，因为它的唯一负载就是集群复制。

The one on the right (standby server) is called a "standby" member because the only load on it is cluster replication.

youdao

为了在备用服务器上保持数据库的一个同步副本，系统会一致地将DB 2 HADR日志文件从主要服务器发送到备用服务器来保持二者的同步。

To keep a synchronized copy of the database on the standby server, DB2 HADR log files are consistently sent from the primary to the standby to keep the two in sync.

youdao

在执行故障转移之前，备用节点上的文件系统没有挂载，所以不可能意外地使用备用节点上的数据。

File systems on the standby nodes are not mounted until the point of failover, so accidental use of data on standby nodes is not possible.

youdao

It's the way to store energy in a place that protects it, packs it away, and keeps it for pregnancy and for nursing the baby, so it's very important from a reproductive point of view.

这样把能量储存在一个地方,保护起来,为怀孕和养育孩子备用,从生殖观点来看这是很重要的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选