This program will be rebroadcast next week.

Spectroscopy is an important means of investigating the properties of matter.

Reverse Polish notation is one method of expressing calculations.

Electromagnetic radiation conveys energy in forms such as light and radio waves.

My four treasures of the study are a fountain pen, a pencil, an eraser, and a ruler.

Alternating hot-cold baths have the effect of improving blood circulation in the body.

He is exactly in the state of 'A frog in a well does not know the vast ocean.'

He wrote the original plan for this movie.

When I caught a cold, I tried heat therapy.

He is immersed in the study of dialectical materialism.