英语词汇“ratchet”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

ratchet

(rætʃɪt )

Word forms: ratchets , ratcheting , ratcheted

1. countable noun

In a tool or machine, a ratchet is a wheel or bar with sloping teeth, which can move only in one direction, because a piece of metal stops the teeth from moving backwards.

The chair has a ratchet below it to adjust the height.

A ratchet mechanism transfers the thread from spool to bobbin.

2. verb

If a tool or machine ratchets or if you ratchet it, it makes a clicking noise as it operates, because it has a ratchet in it.

The rod bent double, the reel shrieked and ratcheted. [VERB]

She took up a sheet and ratcheted it into the typewriter. [VERB noun]

3. singular noun

If you describe a situation as a ratchet, you mean that it is bad and can only become worse. [mainly British]

...another raising of the ratchet of violence in the conflict.

Phrasal verbs:

ratchet down

phrasal verb

If something ratchets down or is ratcheted down, it decreases by a fixed amount or degree, and seems unlikely to increase again. [mainly journalism]

We're trying to ratchet down the administrative costs. [VERB PARTICLE noun]

[Also VERB noun PARTICLE]

ratchet up

phrasal verb

If something ratchets up or is ratcheted up, it increases by a fixed amount or degree, and seems unlikely to decrease again. [journalism]

...an attempt to ratchet up the pressure. [VERB PARTICLE noun]

He fears inflation will ratchet up as the year ends. [VERB PARTICLE]

Audiences' expectations are ratcheted up as they are exposed to high-budget productions. [VERB PARTICLE]

单词	ratchet
释义	ratchet (rætʃɪt ) Word forms: ratchets , ratcheting , ratcheted 1. countable noun In a tool or machine, a ratchet is a wheel or bar with sloping teeth, which can move only in one direction, because a piece of metal stops the teeth from moving backwards. The chair has a ratchet below it to adjust the height. A ratchet mechanism transfers the thread from spool to bobbin. 2. verb If a tool or machine ratchets or if you ratchet it, it makes a clicking noise as it operates, because it has a ratchet in it. The rod bent double, the reel shrieked and ratcheted. [VERB] She took up a sheet and ratcheted it into the typewriter. [VERB noun] 3. singular noun If you describe a situation as a ratchet, you mean that it is bad and can only become worse. [mainly British] ...another raising of the ratchet of violence in the conflict. Phrasal verbs: ratchet down phrasal verb If something ratchets down or is ratcheted down, it decreases by a fixed amount or degree, and seems unlikely to increase again. [mainly journalism] We're trying to ratchet down the administrative costs. [VERB PARTICLE noun] [Also VERB noun PARTICLE] ratchet up phrasal verb If something ratchets up or is ratcheted up, it increases by a fixed amount or degree, and seems unlikely to decrease again. [journalism] ...an attempt to ratchet up the pressure. [VERB PARTICLE noun] He fears inflation will ratchet up as the year ends. [VERB PARTICLE] Audiences' expectations are ratcheted up as they are exposed to high-budget productions. [VERB PARTICLE]
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