ratchet up

基本解释

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，人人可以略微调高IPO的美国存托股票单价，而这种情况通常发生在最受追捧的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.
委托人承担日益高昂的费用（电子透露服务业目前估价在12亿美元至28亿美元之间），而律师则不断要求对方提供更多信息。
These numbers would ratchet up further were Spain to default.
如果西班牙违约，这些数字将进一步上升。

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. ...