您要查找的是不是：
- active backup link 活动备用链路
- Backup Link A resilient (fault tolerant) link which is not used until the primary link fails. 备份链路弹性(容错)链路,主链路故障后启用。
- It can be argued that having a backup link that's significantly smaller than your main one is a bit pointless, but at least you can set filters to let only the vital traffic through if your primary link fails. 也许有人会说，备一条容量远小于主路径的备用链路没有多大意义，但至少你可以设置过滤器，这样万一主链路出故障后，可以让那些重要流量通过。
- The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
- Do you have any backup if this machine fails? 如果这台机器坏了你有备用的吗?
- We should always have a backup plan. 我们应该总是有备用的计划。
- He is an active member of the school's stamp club. 他是学校集邮俱乐部的一名活跃会员。
- An active volcano may explode at any time. 活火山随时都有可能爆发。
- Is it wise to engage in active sports at your age? 我这样的年纪积极参加体育活动是否明智？
- She was active as a left-winger in the party. 她是党内积极的左翼分子。
- He was very active and rode down several horses. 他劲头很大，一连骑了好几匹马。
- She plays an active part in local politics. 她积极参与地方政治活动。
- The steel market will continue to be active. 钢材市场将会继续保持活跃。
- An active volcano may erupt at any time. 活火山随时可能喷发。
- He was disabled when on active service. 他在战斗中受伤致残。
- Ms. Brown is active in the party. 布朗女士在晚会上很活跃。
- The active boy was extremely distractible. 那好动的男孩极不专心。
- His lame foot disqualified him for active work. 跛脚使他无法参加积极活动。
- We offer a free backup service to customer. 对顾客我们提供免费配套服务。
- He's very active for an elderly man. 作为老年人，他是非常活跃的。
