Word: 黑洞 (hēidòng) 黑洞 dictionary entry hēidòng black hole Full dictionary entry for 黑洞 Example sentences using 黑洞 2 sentences, showing page 1 of 1. 如果掉进黑洞，会发生什么事？ Rúguǒ diào jìn hēidòng, huì fāshēng shénme shì? What would happen if you fell into a black hole? 黑洞的引力为什么那么大？ Hēidòng de yǐnlì wèishénme nàme dà? Why is the gravitational pull of a black hole so strong?