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.

After the nuclear accident in Fukushima, decontamination work is being carried out.

They are working hard to decontaminate the radioactive contaminated area.

His illness has completely vanished.

His pain completely vanished.

He became a pariah in society.

This room has high humidity, so we need to use a dehumidifier.

The humidity in this room is high, so let's dehumidify it using a dehumidifier.