ratchet up

基本解釋

And, if demand is really high, it can ratchet up the price per ADS of the IPO, which often happens with the most sought-after offerings.
此外如果需求真的很高，人人可以略微調(diào)高IPO的美國存托股票單價，而這種情況通常發(fā)生在最受追捧的IPO身上。
Clients foot the ever-growing bills (e-discovery services are now a business estimated to be worth between $1.2 billion and $2.8 billion) as the lawyers ratchet up their demands of each other.
委托人承擔日益高昂的費用（電子透露服務業(yè)目前估價在12億美元至28億美元之間），而律師則不斷要求對方提供更多信息。
These numbers would ratchet up further were Spain to default.
如果西班牙違約，這些數(shù)字將進一步上陞。

Most significantly, the Chinese government has begun to ratchet up pressure on the demonstrators.
ECONOMIST: Meanwhile, the government adjusts the thermostat
We will continue to work with our allies to ratchet up sanctions, to isolate the regime.
WHITEHOUSE: Press Briefing
But costs also ratchet up because the show's producers want to make a good impression.
FORBES: Pilots That Crash

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