By random chance , a particle - antiparticle pair can flit into existence straddling the event horizon 跨越事件视界时，一对粒子-反粒子对能够以某种随机性产生。
There are two event horizons , the outer and the inner . the region of space in - between the two horizons is the 旋转黑洞有外内两个事件穹界，而它们之间的区域称为
However an observer at the event horizon would think that the man never reached the center at all 然而，位于“事界”上的观察者则认为这个人永远不会到达黑洞的中心。
Particles from outside this region can fall in , cross the event horizon , and will never be able to leave 来自外面这个区域的粒子能落进去,越过活动视界,而将永远不能够离开。
It became apparent that it had a surface ( which got named an event horizon ) which you could get into but not out of 很显然它有一个只能进去却无法出来的表面（后来称其为视界） 。
To the distant observer , the object , falling slower and slower , approaches but never reaches the event horizon 对远距离的观察者，物体越来越慢地落下,接近但是永远不会到达活动视界。
The " surface " of a black hole is the so - called event horizon , an imaginary surface surrounding the mass of the black hole 黑洞“表面”就是所谓的活动视界，一个想像的黑洞质量周围的。
But observation by the hubble space telescope in recent years provided convincing evidence for the existence of the event horizon 但近年哈勃太空望远镜的观测竟然为黑洞视界的存在提供了一些有力的证据。
In 1971 , stephen hawking showed that the total area of the event horizons of any collection of classical black holes can never decrease 在1971年，史蒂芬?霍金指出任何经典黑洞集合活动视界总面积无法减少。
When the ship reached the event horizon , it would appear to stop , staying there forever and never falling in toward oblivion 当船到达事件视界时，它可能看上去是停住了，永远留在那里并且永远不会掉入湮灭。
