| 单词 | expectancy | 
| 释义 | ex·pec·tan·cy   (ĭk-spĕktən-sē) n. pl.   ex·pec·tan·cies  1.  The act or state of expecting; expectation: Tense with expectancy, I waited for my name to be called. 2.  The state of being expected. 3.  Something expected. 4.  An expected amount calculated on the basis of actuarial data: a life expectancy of 70 years. | 
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