Today is an unlucky day, so it's better not to do anything.

He was pursued by bad luck all his life.

Every Friday, I participate in an aquacise class at the pool.

I attend a water aerobics class every Friday.

We are planning to go to the aquarium this weekend.

I found a brown-headed thrush in the park.

In Greek mythology, Aether was the god of the sky.

Sometimes it's difficult to distinguish between good and evil.

I thought his behavior was ugly.

His behavior was the epitome of ugliness.