sag1

noun

/sæɡ/

[uncountable, countable, usually singular]

the fact of hanging or bending down in the middle, especially because of weight or pressure（尤指由于承重或受压）中间下垂，下凹
- Weight has caused the sag.承重导致下垂。
sag (in something) a decrease in something松弛：某物减少
- a sag in machinery orders机械订单下降

verb

/sæɡ/

Verb Forms

present simple I / you / we / they sag	/sæɡ/ /sæɡ/
he / she / it sags	/sæɡz/ /sæɡz/
past simple sagged	/sæɡd/ /sæɡd/
past participle sagged	/sæɡd/ /sæɡd/
-ing form sagging	/ˈsæɡɪŋ/ /ˈsæɡɪŋ/

Phrasal Verbs

[intransitive] to hang or bend down in the middle, especially because of weight or pressure（尤指由于承重或受压）中间下垂，下凹
- a sagging roof凹陷的房顶
- The tent began to sag under the weight of the rain.雨水使得帐篷中间开始下坠。
- Your skin starts to sag as you get older.人老了，皮肤就会慢慢松弛。
- Her shoulders sagged in defeat.她的肩膀因失败而下垂。
Extra Examples
- The shelf sagged under the weight of hundreds of volumes.在数百本书的重压下，书架向下凹陷了。
- a mattress that was beginning to sag in the middle中间开始凹陷的床垫
- Helga's body sagged forward.黑尔佳向前瘫倒下去。
- Martin sighed and sagged back in his chair.马丁叹了口气，瘫坐在椅子上。
- She sagged against the door.她倚在门上。
- She seemed to visibly sag at the thought of what lay ahead.她似乎一想到将要遇到的事就明显变得很消沉。
Oxford Collocations Dictionary
adverb
- a bit
- slightly
- visibly
- …
preposition
- against
- under
phrases
- sag in the middle
[intransitive] to become weaker or fewer减弱；减少
- Their share of the vote sagged badly at the last election.在上次选举中他们的得票数大幅下跌。
- We tried to revive her sagging spirits.我们试图重振她低落的精神。

Word Originlate Middle English (as a verb): apparently related to Middle Low German sacken, Dutch zakken ‘subside’.

sag2