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

Aesthetics is closely connected with human and humanity. It is a positive proof of the power of human being's intrinsic quality.

审美与人、人性的觉醒密切相关，是“人的本质力量的确证”；

youdao

These fingerprints are positive proof that he used the gun.

这些指纹是他用过这支枪的确实证据。

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