Please store the food in the refrigerator.

This old radio uses a cold-cathode tube.

Reducing greenhouse gas emissions is important for environmental protection.

We need to evaluate the cost-effectiveness of this project.

We need to evaluate the cost-effectiveness of this project.

The photoelectric effect is a phenomenon where a material emits electrons after absorbing light.

Have a nice day.

He is good at reading traditional Chinese characters.

He is good at reading simplified Chinese characters.

The pineal body is a small endocrine gland located in the brain.