This language is characterized by implosives.

The four tones of Chinese, namely ping, shang, qu, and ru, I particularly find the rising tone (jōshō) difficult.

Excuse me, may I come in?

My paper is going to be presented at the Institute of Electrical and Electronics Engineers conference.

This chamfered cube is one of the shapes in mathematics, and it has the characteristic that all faces are equal.

He is doing special exercises to strengthen the incisivus labii superioris muscle.

She started a special exercise to strengthen the incisivus labii inferioris muscle.