一旦有物体穿过环绕该区域的所谓视界（eventhorizon），它就注定有去无回。
1·The trailing edge of the second pulse, therefore, also ACTS as an event horizon.
因此，第二个脉冲的后缘地带也发挥了视界的作用。
2·To be sucked in by a black hole, you need to reach its event horizon, the one-way boundary beyond which nothing can escape.
要被一个黑洞吸入，你必须抵达它的视界，即：超过这个边界任何都无法逃离的单程边界。
3·But once inside the event horizon (the surface of a black hole) it is never possible to communicate with the outside.
但是，一旦进入视界(黑洞的表面)，就绝无可能与外界交流了。
4·This spinning area surrounding the event horizon is called the ergosphere and has an ellipsoidal shape.
这活动视界周围旋转的区域是所谓的能层而具有椭圆形。
5·According to theory, the event horizon of a black hole that is not spinning is spherical, and its singularity is (informally speaking) a single point.
依照理论，不旋转的黑洞活动视界是球形的，而且它的奇异点是(非正式说法)是单一点。