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单词 unproven
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unproven

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unproven

(ʌnpruːvən, -proʊv-) or unproved (ʌnpruːvd)
adjective
If something is unproven, it has not definitely been proved to be true.
There are a lot of unproven allegations flying around.

unproven in British English

(ʌnˈpruːvən, ʌnˈprəʊvən)
adjective
1. 
not established as true by evidence or demonstration
unproven allegations
2. 
(of a new product, system, treatment, etc) not tried or tested

Examples of 'unproven' in a sentence
unproven

Technology is unproven until it is proven.
Times, Sunday Times (2017)
Forget that its unproven technology is causing massive delays and extra costs abroad where it is also being used.
The Sun (2016)
The last thing we need is for the government to be committed to continuing a project with unproven technology, cost increases and massive delays.
Times, Sunday Times (2016)
The allegations that follow have not been tested in court and remain unproven.
Times, Sunday Times (2006)
Yet the great temptation is to seek one in an unproven treatment regimen the patient has followed.
Times, Sunday Times (2007)
It is risky investing in new and unproven technology.
Times, Sunday Times (2010)
The technology is still unproven on a commercial scale.
Times, Sunday Times (2009)
It is difficult to assess their effectiveness and this technique must remain unproven.
Whiteside, Dr Mike Banish Headaches -how to obtain fast, drug-free relief from headache (1990)
The claims for grafting remained unproven.
Christy Campbell PHYLLOXERA: How Wine was Saved for the World (2004)
So far those ideas remain unproven.
Times, Sunday Times (2012)
Under this system, closed courts hear unproven allegations.
Times, Sunday Times (2015)
Most of these alternative treatments are scientifically unproven, but are supported by vast anecdotal evidence.
Christianity Today (2000)
Sentiment has turned distinctly frosty towards listings, particularly of unproven technology companies.
Times, Sunday Times (2014)
The drug uses a scientific mechanism that remains unproven in humans and has been viewed as high-risk.
Times, Sunday Times (2006)
The outcome may be uncertain and the new business model unproven, but that yield gives reason enough to buy.
Times, Sunday Times (2015)
One part of government seeks to endorse unproven and disproved treatments, at the same time as another part makes them illegal.
Times, Sunday Times (2009)
Few fears strike at the hearts of men more than the prospect of going bald, and there are many unproven treatments that prey on this insecurity.
Times, Sunday Times (2007)
For new, unproven technologies, expand your definition of "return on investment" and learn to measure indirect benefits.
Larry Downes THE STRATEGY MACHINE (2002)
There is a high risk in going it alone with unproven technology, and a further reputational risk if it fails to work and punters are left unhappy.
Times, Sunday Times (2011)
At the other end, an application provider in the product domain offers that same solution, albeit based on unproven technology.
Geoffrey A. Moore LIVING ON THE FAULT LINE, REVISED EDITION (2002)
These cancer drugs are controversial precisely because they are, as yet, unproven or because their known effect is limited or uncertain.
Times, Sunday Times (2008)
It works musically I think, but is yet unproven dramatically.
Times, Sunday Times (2009)
The TV documentary claimed his London clinics offered unnecessary and unproven treatments.
The Sun (2007)
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更新时间：2025/3/22 14:31:00