名词
中文翻译：夜弧
同义词：
['night line', 'nocturnal arc例句：1. The night arc of the moon casts a long shadow across the deserted city.（月亮的夜弧在空无一人的城市上投下了长长的影子。）']
例句：
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1. The night arc of the moon casts a long shadow across the deserted city.
月亮的夜弧在空无一人的城市上投下了长长的影子。
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2.The scientists observed the night arc of the planet Venus and found it to be unusually bright.
科学家们观察了行星维纳斯的夜弧，发现它异常明亮。
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3. The night arc of the galaxy is so vast that it can't be fully seen from Earth.
银河系的夜弧如此广阔，从地球完全可见是不可能的。