Take special note of key points, events and names that the story hinges on.

特别注意故事的关键点、事件和名字。

Every black hole has an event horizon, the point at which the gravitational pull becomes so strong that you can't escape from it.

每个黑洞都有一个视界在那里，万有引力会变得非常强大，令你难以逃脱。