名词
1. 前夕;前一天；前一段时间
The eve of a particular event or occasion is the day before it, or the period of time just before it.
1. the day before
e.g. he always arrives on the eve of her departure
2. the latter part of the day (the period of decreasing daylight from late afternoon until nightfall)
e.g. he enjoyed the evening light across the lake
3. the period immediately before something
e.g. on the eve of the French Revolution