The vesical sphincter plays a crucial role in controlling the excretion of urine.

Dysfunction of the sphincter of Oddi is considered a type of gallstone disease.

The urethral sphincter is a muscle that controls the flow of urine.

I'm adjusting the audio in the sub control room.

He was born as an illegitimate child and experienced many difficulties.

My grandfather used to till his privately-owned rice field.

Using the private railway makes commuting very convenient.

We respect Japanese culture.

We are going on a trip tomorrow.

He holds a personal grudge against me.