nightfall/ˈnaɪt.fɑːl/名词黄昏,傍晚,日暮As the sun began to dip below the horizon, the colors of the sky transformed into a breathtaking display of purples and oranges heralding the onset of nightfall.当太阳开始沉到地平线以下时,天空的颜色转变成了令人惊叹的紫色和橙色展示,预告着夜晚的开始。想跟读,去练习