If you decide not to buy, the money you have spent on the survey is not recoverable.

如果你决定不买，你花在鉴定上的钱就拿不回来了。

《柯林斯英汉双解大词典》

He will not do so for long, for mercifully the public has the good sense not to buy the inferior article more than once.

他这样做的时间不会太长，因为幸运的是，公众有良好的判断力，不会不止一次地购买劣质商品。

youdao

She knows what to buy and what not to buy.

她知道什么该买，什么不该买。

youdao

"And every person in America needs to make better choices and obviously not to buy it.

VOA: standard.2010.08.11

These plots are extracted from these two regions and represent trials in which you're about to buy a product or you are about not to buy a product.

这些图是两个区域的切片,分别代表着受试者是否会,购买商品的不同试验。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Let's say, the lottery is happening and you want to buy a ticket, and you're not sure.

假设你看到有彩票，你也想去买一张。但是你有点拿不定主意。

The thing is 课堂 - SpeakingMax英语口语达人

Police chief Marcelo Arigony said the band had chosen not to buy more expensive indoor flares.

BBC: Brazil fire caused by cheap fireworks, say police

Based on that data point, I decided not to buy the potato chips they were selling.

FORBES: Cheap or Comfortable?

Investors have been making more and more excuses not to buy stocks in the current environment.

FORBES: Ignoring the Money Illusion