词典论坛联络

   英语 俄语 +
Google | Forvo | +

herd immunity threshold

强调
医疗的 пороговый уровень популяционного иммунитета (the proportion of a population that need to be immune in order for an infectious disease to become stable in that community capricolya); пороговый процент иммунной прослойки (capricolya)