He trains his triceps at the gym every day.

I hit the jackpot with a trifecta.

It's difficult to hit a trifecta.

His message ended with a three-dot ellipsis, suggesting something.

He can do a perfect handstand.

I am attending cooking classes to learn the technique of filleting fish.

They are always together like the Three Musketeers at school.

When learning Japanese grammar, understanding the tri-grade conjugation is important.

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

My younger sister caught pertussis.