1、黑洞是什么，天文学家还没有完全解决这个问题。

What are black holes?Astronomers haven't solved this problem completely.

2、据说黑洞可以将其周围的一切物体，如星星吞食掉。

It is said that black holes can swallow up everything around such as stars.

3、对黑洞的研究刚刚开始，各种各样的假说会层出不穷。

The research on black hole has just begun，various assumptions will spring up.

4、科学家仍不能说出黑洞内发生了什么。

Scientists are still unable to say what is happening is black holes.

5、如果我们认识了黑洞，黑洞就不那么可怕了。

If we understand black holes，they will not be terrible.