This electrical appliance requires a direct current power supply.

This river and that river confluence here.

The false rumor hurt his reputation.

A fermion is one of the fundamental constituents of matter.

Due to the influence of ocean currents, the distribution of marine life can change.

The troposphere is a part of the Earth's atmosphere, extending from the surface to about 10 kilometers.

Neurotransmitters play a crucial role in transmitting information in the brain.

I use a tram for commuting every day.

There is a state-of-the-art electron microscope in my laboratory.

The power supply in this area comes from that electrical substation.