His high-functioning smartphone greatly helps his daily life.

This high-functionality smartphone has many convenient features.

The doctor recommended a blood test to check my liver function.

He ate one apple.

It is important for each person to fulfill their role.

The anal sphincter is an important part of the body.

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

The pupillary sphincter adjusts the size of the pupil according to the intensity of light.

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

He overcame the obstacles and achieved his goal.