nightfall

名词 nightfall:

1. the time of day immediately following sunset
   同义词：twilight, dusk, gloaming, gloam, evenfall, fall, crepuscule, crepuscle

1. After nightfall we drove slowly along picking our way until we found the right turn.
   入夜后我们开车慢行，小心前进，直到找到需要的转弯路口。
2. Let's push on it's nearly nightfall.
   咱们继续往前走吧--天快黑了。
3. The period of light between dawn and nightfall; the interval from sunrise to sunset.
   白天，白昼黎明和黄昏之间有光的一段时间; 从日出到日落的间隔

night.fall

n.（名词）
The approach of darkness; dusk.
黄昏：夜幕降临；傍晚