1.The body's circulatory system includes the heart and blood vessels.
人体的血液循环系统包括心脏和血管。
2.The heart pumps blood to all parts of the body through a network of arteries and veins.
心脏通过动脉和静脉网络将血液输送到身体的各个部位。
3.The digestive system breaks down and absorbs food into the body.
消化系统分解并吸收食物进入身体。
4.It supplies the energy that the body needs for growth and repair.
它提供身体生长和修复所需要的能量。
5.After digestion,excess food is turned into waste and eliminated from the body.
消化后，多余的食物会变成废物并从体内排出。
6.The nervous system includes the brain,spinal cord and nerves.
神经系统包括大脑、脊髓和神经。
7.This is your body's control system.
这是你身体的控制系统。
8.It controls your muscles and organs,including your circulatory and digestive systems.
它控制着你的肌肉和器官，包括你的血液循环系统和消化系统。
9.The respiratory system includes the nose and lungs.
呼吸系统包括鼻子和肺。
10.It brings air and oxygen into the body and removes carbon dioxide.
它把空气和氧气带进身体，排出二氧化碳。
11.The lungs are where oxygen enters the bloodstream and carbon dioxide is removed.
肺是氧气进入血液和二氧化碳被清除的地方。
12.The immune system protect the body against infections and diseases.
免疫系统保护身体免受感染和疾病的侵害。
13.Sneezing and fever are example of how the immune system works.
打喷嚏和发烧是免疫系统工作的例子。
14.If an infection invades the body, the immune system attacks It.
如果感染侵入身体，免疫系统就会攻击它。
15.The digestive system is where food is broken down and absorbed into the body.
消化系统是食物被分解和吸收到身体的地方。
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