translation.en: Well, some other scientists have estimated what would happen if you took a 30 percent random sample of these 1000 people, 300 people and immunized them.
translation.zh: 一些其他的科学家已经预测了 可能发生的情况，如果你从这一千人中取百分之三十的随机样本 也就是三百个人，并且使他们免疫。