translation.en: These countries took those strategies I just showed you; the community engagement, the case finding, contact tracing, etc., and they turned them on their head.
translation.zh: 这些国家采取了我刚刚 为大家展示的那些策略； 社区联合，寻找病例， 追踪联系人，等等。 然后他们改变了策略。