名词
中文翻译：消失
同义词：
['vanish', 'vanish', 'evaporate', 'disappear']
例句：
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1.The sun disappeared behind the clouds.
太阳消失在云后面。
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2.The river's flow has completely disappeared.
河流的流动已经完全消失了。
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3. The mystery of her disappearance has never been solved.
她失踪的谜团从未得到解决。