This univalve has beautiful colors, doesn't it?

I learned the meaning of 'ichi ni ten' in the classical Japanese class.

This is a once-in-a-lifetime opportunity.

He and his brother look so alike, they seem like the very same person.

Their teamwork was in complete harmony, and it was beautiful.

A day without seeing her feels like an eternity of waiting impatiently.

He tends to regard all people as the same.

They are treating all students as one.

Her dress was a single point of red, standing out in the party.

Solving a linear equation is difficult.