We have no firm evidence to support the case.
我们没有确凿的证据支持这个论点。
This man may have killed others but unfortunately we have no firm evidence.
这名男子可能还杀过别的人，只可惜我们没有确凿的证据。
Found a theory on firm evidence.
证实某理论、论据、命题等。
还没有肯定的试验依据。
‘You’d think it was based on firm evidence of health benefit. Think again!
如果你认为有充足的证据来证实此建议有益身体健康，那么你就又错了！
And there is no firm evidence that the drugs protect against lung cancer.
而且现在没有确定的证据说明该类药物可以防止肺癌的发生。
I see and feel them all the time, but I have never caught firm evidence until now.
我看到和感受到他们所有的时间，但我从来没有发现确凿证据，直至现在。
I see and feel them all the time, but I have never caught firm evidence until now.
我看到和感受到他们所有的时间，但我从来没有发现确凿证据，直至现在。
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