What is Black Hole? How is it? Just a question. I just want to know what is Black Hole. If you answer in English, please answer in English.
(A short and neat answer is ok.)
收錄日期: 2021-04-22 00:37:14
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080819000051KK02988