人体细胞

Cells are the smallest living units of the body. (the body may be linked to a city cells). Tissues are groups of cells with similar structure and function. Organs are groups of tissues, a cooperation of tissues that contribute to specific functions. Organ systems are groups of organs that work together to perform specific functions. A person is made of properly functioning organ systems.

细胞是人体最小的生命单元。(身体可能与城市细胞相连。) 组织由一组功能和构造相似的细胞组成，器官是一组特定组织合作所做的贡献，器官系统是一组共同工作，执行特定工作的器官，人体是由功能正常的器官系统构成。