名詞 descent:

1. a movement downward
2. properties attributable to your ancestry
   同義詞：origin, extraction
3. the act of changing your location in a downward direction
4. the kinship relation between an individual and the individual's progenitors
   同義詞：line of descent, lineage, filiation
5. a downward slope or bend
   同義詞：declivity, fall, decline, declination, declension, downslope
6. the descendants of one individual
   同義詞：lineage, line, line of descent, bloodline, blood line, blood, pedigree, ancestry, origin, parentage, stemma, stock

1. He traces his descent back to an old norman family.
   他追蹤自己的世系上溯至一個古老的諾曼家族。
2. The descent down the mountain took nearly two hours.
   下山差不多花了兩個小時。
3. There was a descent of temperature after rain.
   雨后氣溫下降了。

de.scent

n.（名詞）
The act or an instance of descending.
下降，降落：下降的動作或實例
A way down.
下坡路：向下延伸的路
A downward incline or passage; a slope.
斜面，斜坡：向下的斜面；傾斜面

Hereditary derivation; lineage:
出身，血統(tǒng)，祖籍：遺傳血統(tǒng)；家系：
例句：
a person of African descent.
一個非洲血統(tǒng)的人

One generation of a specific lineage.
一代家族：某種特殊世家的后代

The fact or process of coming down or being derived from a source:
演化，派生：從某一源泉發(fā)展或演化出來的事實或過程：
例句：
a paper tracing the descent of the novel from old picaresque tales.
追溯古老的傳奇故事演化到小說的論文

Development in form or structure during transmission from an original source.
發(fā)展：演化的過程中在形式或結構上的發(fā)展
Law Transference of property by inheritance.
【法律】 繼承：通過繼承實現(xiàn)的財產(chǎn)轉移
A lowering or decline, as in status or level:
（如地位或水平的）下降，轉下坡路：
例句：
Her career went into a rapid descent after the charges of misconduct.
在為這次管理不善承擔主要責任后，她的職業(yè)生涯開始走上急劇的下坡路

A sudden visit or attack; an onslaught.
猛攻：突然拜訪（或攻擊）；猛攻

來源：
Middle English
中古英語
from Old French
源自 古法語
from descendre [to descend] * see descend
源自 descendre [下降，走下坡路，傳下] *參見 descend