Please check my outbox.

兩唇音 is a type of sound produced using the lips.

He is attending a college preparatory school.

The theory of harmonic oscillators is a fundamental concept in physics.

This rubber is free to expand and contract, and can be changed into any shape.

He overcame hardship and achieved success.

He felt pain within his body.

Gestalt psychology is an important means to understand human cognitive processes.

He lost consciousness due to the effects of nerve gas.

He likes to go to haunted places.