单词not proven
na.: 证据不足
网络: 证据不足的；无法证明
"If you compare with a treatment that is not proven to be effective, you don"t know if either drug is effective, " she said.
“如果你与一个不能证明是有效的治疗比较，那么你不知道是否每一个药物都是有效的，”她说。
Certainly it has not proven to be a workable solution in the Niger Delta, where it has only served to toughen the militants.
显然，这种办法在尼日尔三角洲被证明是行不通的，相反已让武装人员变得更强硬。
Until this quest is complete, she does not belong to any of them, for she has not proven herself worthy.
在任务完成之前，她不是狼人的一员，因为她还没有证明自己的价值。
Historically, this has not proven effective: the UN has not been able to impose any decision on Israel since 1948.
然而历史已经证明这样做是徒劳的：自1948年以来，联合国就一直无力迫使以色列接受任何决议。
In earlier incidents, some commercial crew members took to pelting marauders with tomatoes, but that has not proven a successful defense.
在早些时候发生的事件中，有些商船船员向海盗连续投掷西红柿，但这种做法未能达到自卫目的。
The business case for investment in sustainable property currently rests on risk reduction, not proven return advantage.
当前对可持续房地产投资的商业案例满足于风险的减少，而不是证明投资回报方面的优势。
Plague vaccines at one time were widely used but have not proven to be an approach that could prevent plague effectively.
鼠疫疫苗曾经得到广泛使用，但未证实它是一种可有效预防鼠疫的做法。
It is probable - though not proven - that affected cats contract the disease by eating contaminated bovine meat.
这有可能是因为猫吃了带有病的牛肉引起的，但是没有足够证据证明。
We have not proven that it"s possible for fish to transmit the disease to humans.
弗里德兰说到，我们还没有证明鱼类有可能将克雅氏疾病传播给人类。
As we have seen, models can be discredited but not falsified, and can be vindicated but not proven.
正如我们所看到的，模型可以被诋毁但不能伪造，可以被维护但不能证明。