These amazing pens have a great history of being approved for use in space, since they effortlessly write in the gravity free vacuum of space, and at any Angle.

这些令人惊讶的笔有了不起的历史，被批准在太空试用，因为它们在太空失重的情况下或以任何角度都可以轻松自如地使用。

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There’s gravity in higher dimensions, gravity with extra curvature terms, and gravity coupled to a ‘chameleon field’ that makes the strength of gravity different near matter than in a vacuum.

我们经常提到的是一个更广意义上的万有引力，一个与附加曲率项（extra curvature terms）有关的和与“chameleon field”（它能使物体间的万有引力在真空中和一般条件下的力度大小不同）相结合的万有引力。

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The easiest way to separate a liquid from a solid? Filtration! Learn how to effectively carry out gravity and vacuum filtrations in this video.

将液体从固体中分开来的最简易方法是什麽?过滤！在此影片中将学习如何有效的用重力过露及真空过滤来进行。

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Materials and technologies that are suited for a vacuum, zero gravity, and extreme cold and heat are not the ones we typically can use on Earth.

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The fastest thing in the universe is light, and the amount of time it takes a photon (in a vacuum, absent of gravity), to transit a planck is called planck-time.

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We were operating in a near perfect vacuum with the temperature well above 200 degrees Fahrenheit with the local gravity only one sixth that of Earth.

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