He is an expert in natural language processing.

The atomic number of helium is 2.

I am studying Modern English.

This book is written in the original language.

Do you know this proverb?

The new era name has been announced.

He is good at learning foreign languages.

He was struggling to understand his internal language.

When his spirits are high, the party becomes more enjoyable than usual.

She always works in a cheery manner.