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Evidence based medicine. This describes how many doctors now use medically-based research to treat their patients.
循证医学。它指的是现在有多少医生使用基于医学的研究来治疗他们的病人。
Scientists learn new things every day.
科学家每天都在学习新知识。
Doctors can use this information to better perform their jobs.
医生可以利用这些信息更好地履行自己的职责。
The Germ Theory. This theory states that small micro-organisms in the body cause disease.
生源说。这一理论认为，体内的微小微生物会导致疾病。
Identifying particular organisms help doctors treat particular diseases.
识别特定的微生物可以帮助医生治疗特定的疾病。
Understanding the germ theory helps people understand how diseases spread from person to person.
了解生源说有助于人们了解疾病是如何在人与人之间传播的。
Imaging. X-ray images help doctors see inside of the body.
成像。X光片可以帮助医生看到身体内部。
These pictures show a person’s bones and organs.
这些照片显示了人的骨骼和器官。
Immunology. This is the study of the body’s defense system, how the body fights disease.
免疫学。这是一门研究人体防御系统（即人体如何对抗疾病）的学科。
Oral rehydration therapy. This simple mix of water, salt, and sugar has saved the lives of millions of people.
口服补液疗法。这种水、盐和糖的简单混合物拯救了数百万人的生命。
It can return the body’s fluids to a normal balance.
它可以使体液恢复到正常的平衡。
This is especially important for people suffering from cholera and diarrhoea.
这对患有霍乱和腹泻的人尤其重要。
The Pill. This medicine puts chemical hormones into a woman’s body.
避孕药。这种药将化学激素注入女性体内。
It can help prevent her from becoming pregnant until she wants to become pregnant.
它可以帮助防止她怀孕，直到她想怀孕。
Risks of Smoking. Understanding these risks has saved many lives.
吸烟的危害。了解这些危害拯救了许多人的生命。
There are many harmful chemicals in cigarettes.
香烟中含有许多有害的化学物质。
They can cause cancer. Knowing the risks can help people stop smoking.
它们会致癌。了解这些风险可以帮助人们戒烟。
Tissue Culture. Scientists can grow human tissue, or cells, in a container.
组织培养。科学家可以在容器中培养人体组织，即细胞。
They can test new medicine and treatments on these tissues.
他们可以在这些组织上测试新药和治疗方法。
This way, scientists do not have to test people.
通过这种方式，科学家不必对人进行测试。
