That's passing laws that protect people from themselves, seatbelt laws, for example, or motorcycle helmet laws.

即制定保护人们免受自身行为伤害的法律，诸如系安全带，骑摩托车带头盔的法规。

耶鲁公开课 - 公正课程节选

The study of immunology is the study of mechanisms that your body uses to protect itself from mainly from foreign pathogens like viruses and bacteria.

免疫学研究身体,采用何种机制来保护自身,免受外源病原体如病毒和细菌的伤害

耶鲁公开课 - 生物医学工程探索课程节选

And again,that's important to get rid of hurt.

再说一次，免受伤害是非常重要的。

哈佛公开课 - 幸福课课程节选

Our immune system's function is to keep us healthy in the face of an environment where there are lots of things that could potentially harm us.

我们免疫系统的功能就是保持自身健康,在面对危机四伏的环境时,使我们免受伤害

耶鲁公开课 - 生物医学工程探索课程节选

Well, you could think about the cell wall of a bacterium as its skeleton, it's what protects it from mechanical forces that are out in the world.

你可能认为细菌的细胞壁,就像骨骼一样,使其免受,外界机械力的伤害

耶鲁公开课 - 生物医学工程探索课程节选