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单词 life expectancy
释义 life expectancyBrE /ˈlaɪf ɪkspektənsi/NAmE /ˈlaɪf ɪkspektənsi/ (also ˌexpectation of ˈlife) noun [U, C] the number of years that a person is likely to live; the length of time that sth is likely to exist or continue for 预期寿命;预计存在(或持续)的期限
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