论证说明类精华万能句：
facts prove that......
铁一般的事实证明了......
available evidence points to the fact that.....
所有现存的证据都证明了这个事实......
was evident that ....../Apparently,......
显然地，
st without exception,....../It's generally agreed,......
无可非议的是，
plain truth is that......
明摆着的事实是，
must be pointed out that......
必须被指出的是，
7.A case in point is that.......
一个重要的例子是，
saying "......"indicates that......
这个谚语证明了......
's probably no exaggeration to say that......
毫不夸张地说，
be frank,....../Frankly,
坦白地说，
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