排泄系统 páixièxìtǒng excretory system Definitions Defs Origin Strokes Stroke Words Sentences Sents páixièxìtǒng excretory system 排泄 páixiè to excrete to discharge waste matter from the body, such as urine, sweat, or feces系统 系統 xìtǒng noun system A whole composed of parts that work together to perform a function or achieve a goal; a series or group of related things forming a complex whole.páixièxìtǒng drainage system 排泄 páixiè to drain to let out or drain liquid, such as rainwater or factory wastewater系统 系統 xìtǒng noun system A whole composed of parts that work together to perform a function or achieve a goal; a series or group of related things forming a complex whole.