
好词典

源自拉丁语 'excretio'(排出),由 'ex-'(向外)和 'cernere'(分离)组成,17世纪进入英语。
❶ 指生物体通过代谢过程将废物排出体外的过程,如排尿、排汗等。是维持生命活动的重要生理功能。
“The kidneys play a vital role in the excretion of waste products.”
(肾脏在废物排泄过程中起着至关重要的作用。)
“Sweating is a form of excretion that helps regulate body temperature.”
(出汗是一种排泄形式,有助于调节体温。)
❶ 指被排出的物质本身,如尿液、汗液等代谢废物。常用于生物学或医学语境。
“The lab technician examined the patient's bodily excretions.”
(实验室技术员检查了患者的身体排泄物。)
“Insect excretions sometimes serve as nutrients for plants.”
(昆虫排泄物有时会成为植物的养分。)
excretion system — 指生物体内负责排出废物的器官系统,如人类的泌尿系统。
“The human excretion system includes kidneys, bladder and sweat glands.”
(人体排泄系统包括肾脏、膀胱和汗腺。)
waste excretion — 特指代谢废物的排出过程,强调其生理必要性。
“Proper waste excretion is essential for maintaining homeostasis.”
(正常的废物排泄对维持体内平衡至关重要。)