eve
/iːv/noun
1- the day or period of time immediately before an event or occasion（重大事件或场合的）前夕, 前夜：
on the eve of her departure he gave her a little parcel.
就在她离开的前夕, 他给了她一个小包。
1.1
- the evening or day before a religious festival（宗教节日的）前夕：
the service for Passover eve.
逾越节前夕的宗教仪式。
1.2
- chiefly poetic/literary evening〈主诗/文〉晚上, 夜晚：
a bitter winter's eve.
一个严冬的夜晚。
词源
late Middle English （in the sense 'close of day'）： short form of EVEN2 .