ex·pect·an·cy
noun/ɪkˈspektənsi/
/ɪkˈspektənsi/
[uncountable]- the state of expecting or hoping that something, especially something good or exciting, will happen
预料；预期；期待；盼望 - There was an air of expectancy among the waiting crowd.
等待的人群心怀期盼。
Oxford Collocations DictionaryExpectancy is used after these nouns:- life
Word Originearly 17th cent.: from Latin exspectantia, from exspectare ‘look out for’, from ex- ‘out’ + spectare ‘to look’. - There was an air of expectancy among the waiting crowd.