blackhole
黑洞;禁闭室
例句
Gravitational Radiation from a Particle Moving in the Field of Blackhole
粒子绕黑洞运动时的引力波辐射
The door to the past, you call it blackhole on earth.
过去之门，地球上的人称之为黑洞。
About software security and it's feature or blackhole, very very useful!
有关软件比较，及安全对比！
