expectancy
翻译
期望, 预期, 预期寿命
例句
Life expectancy has increased significantly.
预期寿命已显著增加。
There was an air of expectancy in the room.
房间里弥漫着一种期待的气氛。
语法模式
life expectancy 预期寿命 Life expectancy has increased significantly.
an air of expectancy 期待的气氛 There was an air of expectancy in the room.
近义词
同义词: anticipation, hope
词源
源自拉丁语 'exspectare'（向外看），由 'ex-'（出）和 'spectare'（看）组成。
记忆技巧
通过“life expectancy”（预期寿命）这个词组来记住它。它通常指统计上的或正式的期望。