动词
中文翻译：Unknown
同义词：
['expand', 'spread', 'extend', 'proliferate']
例句：
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1. The disease is spreading rapidly across the country.
这种疾病正在迅速在全国蔓延。
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2. The virus has been spreading from one city to another.
病毒正从一个城市传到另一个城市。
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3. The news of the new policy is spreading quickly among the employees.
新政策的新闻正在员工中迅速传播。