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herd [hə́rd]5


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[meanings]群れ,
[関連語]hard,
1.How Many People Need Vaccines to Reach Herd Immunity?
reach, herd, immunity,




1.How Many People Need Vaccines to Reach Herd Immunity?
群集免疫に到達するためにワクチンが必要な人はどれくらいいるのでしょうか?
[rules]