天文学家正在研究这个黑洞如何影响周围的星系。

Astronomers are studying how this ___black hole affects nearby galaxies.

我发出去的邮件似乎都进入了网络黑洞，再也没有收到回复。

All my emails seem to disappear into an internet ___blackhole, with no replies ever received.

这个程序错误导致服务器变成了一个数据黑洞，所有上传的文件都消失了。

The programming bug turned the server into a ___black hole where all uploaded files disappeared.