We are right in the middle of studying for the exam.

He had to have surgery because his nasal septum was deviated.

An infix is a morpheme that is inserted inside a word.

He is majoring in Sinology.

A central vowel is a vowel that is pronounced in the central part of the tongue.

The central vowels in Japanese are 'a', 'e', 'o'.

He often behaves strangely because of his 'chuunibyou' (middle-school 2nd year syndrome).

He is showing behavior characterized by 'chuunibyou'.

He was born and raised in China proper.

He started exercises to strengthen his gluteus medius muscle.