His secondary role greatly contributed to the success of the team.

The term 'stereotypy' is a part of ethology, referring to the phenomenon where a specific animal repeats a specific behavior.

He has a habit of chewing loudly, so he often makes noise while eating.

She was studying the bone structure of the human face, and was particularly interested in the lacrimal bone.

He was born and raised in a megalopolis.

He adjusted the position of the hyoid bone to improve the quality of his voice.

She fractured her pubis.

He shot the target using a carbine.

He was handling the carbine carefully.

I was surprised when I read the true record of this incident.