sunset
/ˈsʌnset/noun
in sing.
1- the time in the evening when the sun disappears or daylight fades日落, 黄昏, 傍晚：
sunset was still a couple of hours away.
离日落还有几个小时。
1.1
- count noun the colours and light visible in the sky on an occasion of the sun's disappearance in the evening, considered as a view or spectacle日落; 晚霞：
a blue and gold sunset.
蓝色且散发金光的落日余辉。
1.2
- figurative a period of decline, especially the last years of a person's life〈喻〉衰落期（尤指人生的晚年）：
the sunset of his life.
他的垂暮之年。