Continuity is the key to success.

The National Research and Development Agency plays a crucial role in advancing science and technology.

Einstein proposed the theory of relativity.

His actions always have a duality.

My younger brother caught the influenza.

This material has high corrosion resistance.

The prevention of venereal diseases is most important in safe sexual behavior.

This equation has homogeneity.

Radioactive elements are produced in nature and scientific experiments.

He was diagnosed with bipolar disorder.