1. if a living body excretes a substance, it pushes that substance out — usually wa
1.動詞及物B2
釋義
排泄；排出
生物體將廢物排出體外的過程
if a living body excretes a substance, it pushes that substance out — usually waste like urine, sweat, or salt — through skin, kidneys, or other organs.
例句
The human kidneys excrete around 1.5 litres of urine each day.
人類的腎臟每天大約排泄1.5公升的尿液。
subject is an organ; technical biology context
When Dahlia runs in hot weather, her skin excretes sweat to cool the body.
Dahlia 在熱天跑步時，皮膚會排出汗水來幫身體降溫。
named subject + biological process
Plants on the seashore can excrete extra salt through tiny pores on their leaves.
海邊的植物可以透過葉子上細小的孔洞排出多餘的鹽分。
non-animal subject: plants as biological systems
Dr. Takeshi explained that the liver helps the body excrete harmful chemicals from medicines.
Takeshi 醫師說明，肝臟會幫助身體把藥物中的有害化學物質排出體外。
passive-like agentive: organ as the excreting agent
Most of the caffeine you drink is excreted in your urine within twelve hours.
Subject is usually a living body, organ, or organism — not a person as a deliberate actor. People typically don't say 'I excreted'; they say 'the body excreted' or use the passive ('is excreted').
常見錯誤
I excreted my coffee this morning.
The caffeine from my coffee was excreted in my urine.
'excrete' takes the substance leaving the body as object, not the person doing it.
The factory excretes waste into the river.
The factory discharges waste into the river.
'excrete' is biological; for machines or industry use 'discharge' or 'release'.