名词
中文翻译：Unknown
同义词：
['gap enlargement', 'gap expansion', 'gap widening']
例句：
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1. The crack in the wall has grown wider over time.
墙上的裂缝随着时间的推移变得更宽。
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2. The gap between the two countries is closing as they work together.
两国之间的差距正在缩小，因为它们共同努力。
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3. The gap between the rich and the poor is widening.
富人和穷人之间的差距正在扩大。