例如，你能确凿地说A处理水平比控制水平好吗，还是这只是偶然？
For example, can you say for certain that treatment a is better than the control treatment, or could it just be due to chance?
当某人被证据确凿地证明无罪的时候，我们也许会说正义得到了伸张。
We might say that justice has been done when a man's innocence or guilt has been proved beyond doubt.
记住，唯一需要担心的是笑颇具传染性，另一科学事实确凿地证明了这一点。
The only concern to keep in mind is that smiling is very contagious and it is, definitely, another proved scientific fact.
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