As the sunlight weakened at the beginning of the next night, the instructors ran us out to the beach.
在第二天夕阳西下、夜幕降临时，教官让我们从那片海滩跑开。But for the estimated 30% of American adults who suffer from at least occasional insomnia, nightfall is no guarantee of slumber.
但是据估计，30%的美国成年人都受到失眠困扰——至少有时候是这样。夜幕降临，未必就带来酣睡。When the night curtain falls, the ice lanterns gently glow, with a spectrum of gorgeous colors glistening against the dark sky.
夜幕降临之时，冰灯开始绚烂夺目，华彩照亮了夜空。Protesters continued to gather after nightfall, with police maintaining a heavy presence and helicopters circling the capital.
抗议者在夜幕降临后依然集结在一起，现场有大批警力，首都麦纳麦上空有直升机在盘旋。Night came, and Elizabeth thought he might have gone back to the house, so we returned home.
夜幕降临了，伊丽莎白想他可能已经回家了，所以我们也回去了。When darkness falls, Captain and Max pull the car out of the garage. Maria with the children follow them.
夜幕降临，麦克斯与上校将车悄悄推出门外。玛丽亚带着孩子跟在后面。Night was falling, and I had sat down on the ground, my back against a column.
夜幕降临的时候，我坐在地上，背靠一根柱子。Night fell as we were walking, and the clouds, which had broken up in the afternoon, settled in and thickened.
我们走着走着，不知不觉夜幕降临了，午后四散了的云朵已积聚起来，停住不动了。As the night fell, I had no choice but to leave. When I left , he came out and said goodbye to me.
随着夜幕降临，我别无选择，只有离开。当我离开时，他走了出来，对我说再见。