zhōng / zǐ / xīng / de / mì / dù / fēi / cháng / gāo / nèi / bù / wù / zhì / chǔ / yú / jí / duān / zhuàng / tài

中子星的密度非常高，内部物质处于极端状态。

Neutron stars have extremely high density, and their matter is in an extreme state.