Excretion The process by which excess, waste, or harmful materials, resulting from the chemical reactions that occur within the cells of living organisms, are eliminated from the body.
Excretion The process by which excess, waste, or harmful materials, resulting from the chemical reactions that occur within the cells of living organisms, are eliminated from the body.
分泌：生活的生物有机体细胞中由化学反应而产生的过多的、废弃的或有害的物质从体内排出的过程。