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On Monday, the country reported 21 imported cases and zero locally transmitted symptomatic infections. If the trend continues, China could become the world's first country to control a major Delta outbreak.
生词短语:
imported cases
境外输入病例
locally transmitted cases
本土传播病例
transmit
传播
infection
感染；感染病例
outbreak
(战争、疾病等的) 爆发
