单词 | fall back |
释义 | Word Frequency fall backverb (intr, adverb) 1. to recede or retreat 2. (foll by on or upon) to have recourse (to) noun fallback 3. a retreat 4. a reserve, esp money, that can be called upon in need 5. a. anything to which one can have recourse as a second choice b. (as modifier) a fallback position |
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