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
The effect has proved hard to reproduce.
这种效果经证实很难再造。
The format of the new quiz show has proved popular.
新的智力竞赛节目的总体安排结果证明很受欢迎。
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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