Learning a new input method is difficult.

The operator is operating the machine.

The operability of this new software is very excellent.

This robot can be remotely controlled.

He lost everything.

She is planning a date with her current boyfriend.

My boyfriend gave me a gift.

Everyone was surprised by the news.

He likes to take a walk in the park at dusk.

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