nightfall
n. 黄昏；傍晚；日暮
例句
I need to get to Houston by nightfall.
我需要在黄昏时赶到休斯顿。
《柯林斯英汉双解大词典》
They had advanced 20 miles by nightfall.
夜幕降临时，他们已推进了20英里。
《牛津词典》
By nightfall the whole city was burning.
到黄昏时，全城已是一片火海。
