My friend and I strolled in the street at nightfall.

我和朋友黄昏时分在街头漫步。

That man didn't return home until nightfall.

那个人傍晚才回到家。

The battle for life and death began at nightfall.

这场决定生死的战争在傍晚时分开始。

They cast anchor at nightfall.

他们傍晚抛锚停泊。

I need to get to Houston by nightfall.

我需要在黄昏时赶到休斯顿。

By nightfall the whole city was burning.

到黄昏时，全城已是一片火海。

They had advanced 20 miles by nightfall.

夜幕降临时，他们已推进了20英里。

The rebels waited until nightfall before they made their move.

叛乱者一直等到夜幕降临才开始行动。