名词
中文翻译：Unknown
同义词：
['transmission', 'propagation', 'propagation process']
例句：
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3. 例句：1. The new drug has been successfully propagated in clinical trials.
新药在临床试验中已成功推广。
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2. The scientist is studying the propagation of this species in different environments.
科学家正在研究这种物种在不同环境中的传播情况。
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3. The propagation of the disease has been controlled by effective measures.
通过有效的措施，疾病传播得到了控制。