Darwin and his friends put them there, and nearly two centuries later, their grand experiment is living proof that we can transform natural environments.

达尔文与他的朋友们将植物运到那里，而且近两个世纪以后，他们的超长期实验能够非常生动地证明，我们能够对自然环境进行改造。

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In natural science, a mathematical formula of proposed must undergo the theory or experiment proof to just go, and this is what is history scholars are missing.

在自然科学领域，一个数学公式的提出必须要经过理论或实验的证明才行，而这正是历史学界所缺少的。

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Proof system stands a natural core position in the system of civil law suit, but the responsibility for proof is the core in this system.

证据制度在民事诉讼制度中处于天然的核心地位，而证明责任则是民事诉讼制度中核心中的核心。

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The new work by Messrs Jerby, Dikhtyar, Mitchell and their colleagues is not proof that natural ball-lightning consists of silicon nanoparticles.

ECONOMIST: Ball lightning

The choice of white privilege as the denominator in this idea is a decision to accuse, not just of advantage or even immunity, but also of the due expectation of prerogative, and thus to charge with complicity, to impugn the natural moral consciousness, against proof to the contrary, of those so designated, simply by the color of their skin.

CENTERFORSECURITYPOLICY: A Campaign of Willful Blindness on Terrorism

Risk assessments can serve as a vehicle for early buy-in, a method to secure budget and resources, a gauge for progress, a way to avoid fire-drills and set priorities for your program, a natural reporting-out format, and proof for regulators of the adequacy of your program.

FORBES: Risk Assessments: The Most Important Effort You're Doing All Wrong