the state of expecting or hoping that something, especially something good or exciting, will happen see also life expectancy预料;预期;期待;盼望 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’.