Translation of "Dialects" in Chinese

The linguist is fluent in several Chinese dialects.

那个语言学家精通几个中国方言。

The various dialects of China are what 'Chinese' really is.

我们中国的各地方言才是真正的中国话。

There are great differences in pronunciation between different Chinese dialects.

漢語方言間的發音區別很大。