black hole
noun [ C ] uk/ˌblæk ˈhəʊl/ us/ˌblæk ˈhoʊl/
physics specialized黑洞（宇宙中包括光线在内的任何东西都无法逃逸的强引力区域）
a region in space where gravity is so strong that nothing, not even light, can escape
（想象中事物消失的）黑洞
an imaginary place in which things are lost