How would I figure it out? What would count as a positive proof?

我怎么能知道呢？什么能算有力的证据呢？

youdao

I think this is positive proof of their attitude toward the one third of their lives. This is exactly what we should learn from them.

我认为这就是他们对待自己生命的三分之一的严肃认真的态度，这正是我们所应该学习的。

youdao

As proof positive of that glass-half-empty or glass-half-full viewpoints are universal, some witches are hexing away.

FORBES: Witchy Women Must Pay Tax

Like the Likud under Binyamin Netanyahu, Ya'alon is proof positive that Livni and her cronies are lying.

CENTERFORSECURITYPOLICY: A road paved on reality

Proof positive that when some bubbles burst, they never come back near their ascendant positions for years, maybe forever.

FORBES: The Great Stagnation In Broadly Owned Stock Groups