descend

音標(biāo)發(fā)音

adj性質(zhì)的同根詞
descendant：下降的；祖?zhèn)鞯摹?/dd>
descending：下降的；下行的。
n性質(zhì)的同根詞
descendant：后裔；子孫。
descent：下降；血統(tǒng)；襲擊。
descending：遞減；下行。
descender：下降物；下降者；下行字母。
v性質(zhì)的同根詞
descending：下降（descend的ing形式）。
vt性質(zhì)的同根詞
descent：除去…的氣味；使…失去香味。

descend的基本意思是“下來(lái)”“下去”,可指物體向下降落,也可指沿著山坡、梯子、臺(tái)階、樹(shù)干等表示斜線或斜坡的物體下降。
descend可用作及物動(dòng)詞,也可用作不及物動(dòng)詞,用作不及物動(dòng)詞時(shí),常與介詞from連用,表示“是…的后代”“從…傳下來(lái)”, from所接的名詞指祖先、祖宗,并不是指父輩。
descend是正式書(shū)面用語(yǔ),多用于文學(xué)語(yǔ)體中。

(POSITION) to go or come down
(NEGATIVE MOOD) If a negative or bad feeling descends, it is felt everywhere in a place or by everyone at the same time.

If you descend or if you descend a staircase, you move downward from a higher to a lower level.
If a large group of people arrive to see you, especially if their visit is unexpected or causes you a lot of work, you can say that they have descended on you.
When you want to emphasize that the situation that someone is entering is very bad, you can say that they are descending into that situation.
If you say that someone descends to behaviour which you consider unacceptable, you are expressing your disapproval of the fact that they do it.

下降
On the other hand, when the remote sensor runs on orbit, its performance will gradually degenerate and MTF will gradually descend too.
另一方面，隨著衛(wèi)星遙感器在軌運(yùn)行時(shí)間的增長(zhǎng)，其性能會(huì)逐漸退化，MTF也會(huì)逐漸下降。
后裔
后代