名词
中文翻译：病毒株
同义词：
['strain', 'variant']
例句：
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1.The XD strain of the virus has been found to be more virulent than its previous strain.
该病毒的XD株已被发现比其先前的毒株更具毒性。
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2. Scientists are working on developing a vaccine for the XD strain of the virus.
科学家们正在努力开发针对该病毒XD株的疫苗。
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3.The XD strain of the virus is spreading rapidly across the country.
该病毒的XD株正在迅速在全国传播。