A twin-engine airplane can continue to fly even if one engine fails.

Tsukuyomi is the god of the moon in Japanese mythology.

Tsukiko is my best friend.

He was reading the story of 'Tsuki to Suppon'.

He is working night and day.

He is checking the contents of books as a newly appointed censor.

We are in a common-law marriage.

His words roused my heart.

Mr. Tsukahara is my best friend.

Studying the life cycle of this insect is very interesting.