1·This is because whatever occupies empty space would have to be somehow different from the tangible stuff the world is made of.
这是因为无论布满真空的是何种物质，它必须是一种有别于组成这个世界的基本物质的物质。
2·Empty Space Filled With "Virtual" particles.
充满“虚”粒子的真空。
3·If you were to remove all of the empty space from the atoms that make up every human on earth, the entire world population could fit into an apple.
如果把地球上构成每个人的原子中的真空都除去了，那么全世界的人口就能装进一个苹果里。
4·If you were to remove all of the empty space from the atoms that make up every human on earth, the entire world population could fit into an apple.
如果把组成地球上人类身体的原子上的真空全部移除，全世界的人口就可以装进一只苹果里。
5·Hawking showed in the 1970s that black holes should emit energy from their boundaries in the form of radiation produced by quantum fluctuations of empty space itself.
霍金在20世纪70年提出，黑洞以辐射的形式从其边界释放能源，而这种辐射是由其真空区的量子起伏形成。