In general, the World Health Organization WHO uses the following categories PDF to describe transmission patterns: sporadic cases, clusters of cases and community transmission.
cluster 词态变化. 实用场景例句. The plant bears its flowers in clusters. The children clustered together in the corner of the room. 真题例句. There are huge clusters of organic waste they can feed on, said Flack. Countries with the highest scores tend to . 英英释义. 同义词. 行业词典.
The village clusters round the church . 村子的房屋圍繞在教堂的四周。 Brown sparrows clustered on the crossbars . 褐色的麻雀棲息在這些橫檔上。 Finally i was led to another cluster of tents . 我最后被帶到另一排帳篷里。 Not far ahead was a cluster of trees . 前面不遠有一叢樹林。 The boys clustered together round the fire and sang songs . 男孩們成群地圍著火堆唱歌。.
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