He is studying the shape of the inner lip of the shell.

We plan to enjoy fishing in the inland waters this weekend.

His foot is exhibiting inversion.

He is receiving treatment for inversion of the foot.

His shoulder's internal rotation is limited.

Could you tell me the internal dimensions of this box?

This lumen is a path for blood to flow.

He collapsed from intracerebral hemorrhage.

He is studying the history of Japan and Taiwan.

The policy of 'Naisen Ittai' aimed at the integration of Japan and Korea.