It is important for us to be kind to nature.

He is learning Irish.

He struggled to understand the meaning of that lexeme.

This desert, like the Ganges sand, conceals a deep philosophy in its origin and meaning.

He can speak Arabic fluently.

I am studying German language.

He is interested in learning the Karelian language.

What does this wording mean?

We agreed to the plan.

The corporal is leading the troop training.