The internal anal sphincter is a muscle that helps us control defecation.

The internal urethral sphincter plays a crucial role in controlling the flow of urine.

I am planning to go to Inner Mongolia, an autonomous region of China, next week.

The balance of intestinal bacteria greatly affects health.

He is an expert in musicology.

This room is covered with soundproofing material, so the sound doesn't leak outside.

He honked the car horn to get my attention.

The treble clef is often used in musical scores.

He is good at reading the treble clef.

Palatalization is a part of phonetics, referring to the process where a certain sound approaches the palate.