患有这种疾病的人常被社会摈弃。
People with the disease were often treated as social outcasts.
他们向往一个没有贫穷和疾病的平等社会。
They envision an equal society, free from poverty and disease.
他们向往一个没有贫穷和疾病的平等社会。
They envision an equal society, free of poverty and disease.
We'll think about it in section, how you don't need to vaccinate everybody, but you just need to vaccinate a critical number in order to stop the disease from progressing through a community.
我们在讨论会上讲这个,为什么不需要给每个人都接种,但你只需要让接种人数达到一个临界值,就能阻止这个疾病在社会中传播
应用推荐