a fallback
英 /ə ˈfɔːlbæk/
中文释义
备选方案
An alternative plan to use if the original one fails.
常用搭配
- a fallback plan备用方案
- have a fallback留个后手
- use it as a fallback当备选用
例句
- If the venue cancels, we'll need a fallback ready.场地要是取消，得备好后手。
- The cache serves as a fallback when the API is down.接口宕机时，缓存作为兜底。