When light enters water, the angle of refraction changes.

This camera is equipped with a wide-angle lens.

The pheasant-tailed jacana, known as 'the ballerina of the water' for its beautiful appearance.

There is no oblique case in Japanese.

Thermonuclear reactions are the source of the sun's energy.

I received a circular from my friend yesterday.

The use of nuclear bombs is one of the greatest threats to mankind.

This robot can be remotely controlled.

The customer has arrived.