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。
For the development of the first off-world industrial base, a location that provides gravity is preferred to a location in free space.
对于第一个外空间工业基地的开发而言，失重的太空环境是不得不考虑的一个因素。
Virtually every child has dreamed of traveling in space and experiencing what it would be like to live in a gravity-free environment.
几乎每个孩子都曾梦想去太空旅游，体会一下在失重环境下生活是什么样子。
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