夜幕 + 降临
夜幕 (yèmù) means "nightfall" or literally "the curtain of night," a poetic expression describing the onset of darkness. It is a literary term that evokes the imagery of night descending like a curtain over the sky. A common collocation is 夜幕降临 (night falls).
夜幕降临,街上的灯一盏接一盏亮了起来。
yèmù jiànglín, jiē shàng de dēng yī zhǎn jiē yī zhǎn liàng le qǐlái.
As night fell, the street lights lit up one after another.
夜幕下的西湖别有一番韵味。
yèmù xià de xīhú bié yǒu yī fān yùnwèi.
West Lake under the night sky has a special charm of its own.
等到夜幕降临,我们就去看烟花表演。
děngdào yèmù jiànglín, wǒmen jiù qù kàn yānhuā biǎoyǎn.
When night falls, we'll go watch the fireworks show.