| 单词 | 备选方案 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔fallback〕Do you have a fallback option? 你有备选方案吗？朗文当代〔present〕Eight options were presented for consideration.已提出八项备选方案供审议。牛津高阶〔second string〕I needed a second string to my bow.我需要有备选方案。外研社新世纪If Plan A fails, we'll go to Plan B.如果首选方案失败，我们就采用备选方案。牛津商务 |
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