At is the chemical symbol for astatine.

The atomic number of oxygen is 8.

The scientists conducted experiments at the atomic level.

I enjoy the casual invitations to spend the afternoon at home with my friends.

He is an attorney at law.

The atomic weight of an element is the average mass of its atoms.

I'm not going to argue with you, leave it at that .

At some point , we will all die.

During the pandemic, many people have become stay-at-home parents.

She would steal glances at him during the meeting.