Everyone says he's just an upstart.

As an astronomer, he devoted his life to the study of the planet.

A star of the first magnitude is the brightest star in the night sky.

Every morning, it's my daily routine to look at the morning star from the window.

He has a very selfish personality.

He is known for his selfish actions.

He has a selfish personality that imposes his own opinions.

In this story, all of Tan's actions are absurd and incomprehensible.

My car needs regular maintenance.

The agenda of the Security Council is an important issue related to national security and defense.