动词短语
中文翻译：帷幕落下
同义词：
['fall', 'descend', 'drop']
例句：
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1. The curtains have fallen to the floor.
窗帘已经落到了地板上。
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2. The lights in the theater fell as the curtain dropped.
随着幕布落下，剧院里的灯光也熄灭了。
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3. The rain has fallen heavily, and the curtains are now drawn.
雨水下得很大，现在窗帘都拉上了。