量子物理学认为，真空并不是真正是空的，而是沸腾的海洋——被称作虚粒子与反粒子的东西不停出现与消失。
According to quantum physics, empty space is not actually barren but is a boiling sea of so-called virtual particles and antiparticles constantly popping in and out of existence.
量子真空是物理学家为我们所理解的真空起的名字。
The quantum vacuum is the name physicists give to what we see as empty space.
但是经验告诉物理学家们不可以打开任何一扇窗子，不然空气就会冲出去，使房间变成真空。
But experience has taught the physicists never to open a window because, when they do, all the air rushes out and leaves the room a vacuum.
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