The main problem with this project is the lack of communication.

This question text is too difficult, it's hard to understand.

Could you please explain the meaning of this ancient document?

He succeeded in unlocking the door.

He succeeded in unlocking the door.

I listen to Japanese podcasts every day to improve my listening comprehension.

He is very good at understanding spoken Japanese.

What does this proverb interpretation mean?

It is difficult to find the optimal solution to this problem.

She has eyes that can make distinctions down to the smallest details.