Newton had found the mathematical principles, the scientific laws which governed the movements of earth and heavens.

牛顿发现了数学原理，那是支配地球和天上星球运动的科学法则。

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Newton took the principles of motion and of gravitation as deduced from observations of earthbound objects and extended them to the motions of the earth and of the planets around the sun.

牛顿观察物体往地上落，演绎出运动原则和引力原则，并将这些原则扩展到地球的运动和环绕太阳运转的行星的运动。

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Geophysics major branch of earth science that applies the principles and methods of physics to the study of the earth.

地球物理学地球科学的主要分支，用物理学的方法和原理研究地球。

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"What we are doing,folks, we are rolling up our sleeves and we are getting down to business and getting back to the common sense conservative principles that made this country the greatest country on earth, and we are not going to sit down and shut up."

VOA: standard.2010.03.28

From the harmonies of randomness to the dynamics of the Earth's crust, Kahn uses scientific principles to create mesmerizing works of art.

NPR: Artist Captures Wonder of Natural Phenomena

Because there is no other nation on earth with the capacity that we have by virtue of our principles, our history, our beliefs, our values, our resources, and our freedom, that can lead.

CENTERFORSECURITYPOLICY: Liz Cheney at the Freedom Flame: Educating Obama

These four principles illustrate that the concept of sustainable development in the Earth Charter embraces the view that the problems of poverty, environmental degradation, ethnic and religious conflict, and social injustice are all interdependent, and that policies that address one problem can impact and improve other issues.

UNESCO: Understanding sustainable development