A lever is a simple machine.

The mass number of an atom is the total number of protons and neutrons in its nucleus.

Malfunctioning machines caused chaos in the factory.

The laboratory technician analyzed the sample of faecal matter.

The mail relay server is responsible for forwarding emails to their destination.

Mass starvation is a devastating consequence of famine.

She proudly showed off her vaccination mark on her arm.

Beware the ides of March.

I received a ham e-mail this morning.

The law of diminishing marginal utility states that as a person consumes more units of a good, the additional satisfaction or utility derived from each additional unit of the good decreases.