同义词： disengagement pullout
以上来源于: WordNet
ADJ Someone's fallback position is what they will do if their plans do not succeed, or if something unexpected happens. 退守的; 应变的 [journalism] [ADJ n]
Yesterday's vote itself was a retreat from an earlier fallback position.
昨天的投票本身就是从早先的预备立场上的退却。
Fallbacks can employ different strategies for handling conversion failures.
回退可以采用不同的策略来处理转换失败。
We use Socket.IO, which abstracts over websockets and provides fallbacks to support websocket-style communication for browsers that don’t have websockets yet.
我们使用Socket.IO， 它对WebSocket进行了抽象， 还对尚没有WebSocket的浏览器提供了应变方案， 以支持WebSocket式的通信。
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