我对幼儿的语言发展特别感兴趣。

I'm particularly interested in the ___linguistic development of young children.

这两个地区之间存在显著的语言差异。

There are significant ___linguistic differences between the two regions.

每天只学习一小时不足以达到语言流利。

Only one hour of study per day is not enough to achieve ___linguistic fluency.