如果她的确使用了一些秘密的安全装备，那肯定隐藏得很好，让人看不见。
If she did use any secret safety equipment, it's certainly well hidden from the naked eye.
对对宇宙中到处都有人们看不见的物质这种观点——这种物质可以轻松地穿过差不多所有物体而不被人察觉——很难让人接受。
That the universe is filled with matter people cannot see-matter that simply passes through pretty much everything undetected-is hard to accept.
对对宇宙中到处都有人们看不见的物质这种观点——这种物质可以轻松地穿过差不多所有物体而不被人察觉——很难让人接受。
That the universe is filled with matter people cannot see-matter that simply passes through pretty much everything undetected-is hard to accept.
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