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(gè)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(gè)小時(shí)。
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(dòng)作或?qū)嵗?/br>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(gè)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(lái)的事實(shí)或過(guò)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(shuō)的論文

Development in form or structure during transmission from an original source.
發(fā)展：演化的過(guò)程中在形式或結(jié)構(gòu)上的發(fā)展
Law Transference of property by inheritance.
【法律】 繼承：通過(guò)繼承實(shí)現(xiàn)的財(cái)產(chǎn)轉(zhuǎn)移
A lowering or decline, as in status or level:
（如地位或水平的）下降，轉(zhuǎn)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(dān)主要責(zé)任后，她的職業(yè)生涯開(kāi)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(lái)源：
Middle English
中古英語(yǔ)
from Old French
源自 古法語(yǔ)
from descendre [to descend] * see descend
源自 descendre [下降，走下坡路，傳下] *參見(jiàn) descend