study has proved so 研究证明 ; 研究已证明
It Has Proved 实践证明
history has proved 历史表明
practice has proved 实践证明
He Has Proved That 他已经证明过
DNA fingerprinting has proved the clincher in this investigation.
DNA指纹已为此项调查出示了铁证。
The looking-glass self has proved to be partially accurate.
以人为镜自我观已被证明是部分准确的。
Doctor Cawkwell told VOA that fibromyalgia is a very mysterious disease that has proved difficult to diagnose and treat.
VOA: special.2011.08.02
But in an era of plastic explosives and advanced chemical compounds, that system has proved lacking.
VOA: standard.2009.12.30
Lo says the government's financial commitment to the health sector has proved vital to saving children.
VOA: standard.2009.11.10
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