event horizon

名词 n.
中文释义
美 /əˈvɛnt həˈɹaɪ.zən/|/-zɪn/|[əˈvɛɾ̃ həˈɹaɪ.zən]|[əˈvɛn -]|[-zɪn]

英文释义

名词 n.
  1. The gravitational sphere of a black hole within which the escape velocity is greater than the speed of light.
  2. The furthest distance in the past of the universe from which light signals from an event can reach an observer at later times.
  3. A point of no return. broadly,figuratively

词形变化

event horizons plural
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