我学了一点蒙特内哥罗语，但还不太流利。

I've learned some ___Montenegrin phrases, but I'm not fluent yet.

这位黑山人会说三种语言。

This ___Montenegrin can speak three languages.

他在黑山学会了说蒙特内哥罗语。

He learned to speak ___Montenegrin during his time in Montenegro.