verb · to come down or settle, typically used in the context of nightfall, darkness, or the appearance of a deity

每当夜幕降临，山村就笼罩在一片寂静之中。

verb · to happen or befall, usually referring to the onset of a significant event, fate, or unexpected news

谁也没料到，一场突如其来的灾难会降临在这个小镇。