He is an expert in paleoanthropology, conducting research on the origins of mankind.

He is a scholar who is knowledgeable about court and samurai traditions.

I am learning Modern Greek.

He started a new business, but as the proverb 'the road to happiness is strewn with setbacks' suggests, he is facing many difficulties.

He is deeply studying the teachings of Prajnaparamita.

He is receiving a basic living stipend.

He understands the meaning of the proverb 'Teaching is half learning', which means that teaching leads to one's own learning.

I lost my My Number card.

I have been to El Salvador.

The failure of the project was due to a situation where too many cooks spoil the broth.