An abnormality was found in the preoperative examination.

She is attending a self-defense class.

Using mnemonics, it became easier to remember new words.

He was able to get along in society by mastering the art of getting along in the world.

He is a master of Tengenjutsu.

She is a master of naginatajutsu.

He is a master of kayakujutsu.

He observed the stars using a sextant for navigation.

He was deceived by a swindler and lost a lot of money.

'素' is one of the basic characters in Japanese.