When a plant sloughs its leaves, or an animal such as a snake sloughs its skin, the leaves or skin come off naturally.
例句
All reptiles have to slough their skin to grow...所有爬行动物生长过程中都要蜕皮。The lemon geranium sloughs dry brown leaves at the base of its branches.柠檬天竺葵枝条底部棕色的枯叶会脱落。
英汉词典释义
n.
蛇蜕下来的皮;按时脱落的死组织
A cicada throws its slough.蝉是要蜕皮的。
vt.
除掉，去掉(死皮等)
Slough off dry skin once a week.每周除一次干皮。
摒弃；拋弃；摆脱
He was not able to slough off the memories of the past.他无法忘记过去。Responsibilities are not sloughed off so easily.责任不是那么容易推卸的。
英英词典释义
Noun
1. necrotic tissue; a mortified or gangrenous part or mass
2. a hollow filled with mud
3. a stagnant swamp (especially as part of a bayou)
4. any outer covering that can be shed or cast off (such as the cast-off skin of a snake)