He is well-versed in the use of hidden weapons.

There is a large culvert under this road.

He had a problem in the vision test because he has a scotoma.

He said he was afraid of dark places.

What does this code mean?

Something is moving in the dim room.

He was scared to enter the dark cave.

After she left, her subtle fragrance lingered in the room.

He successfully made a concealed kong in mahjong.

He made a concealed kong in mahjong.