He was running while holding a bag.

He always carries an umbrella around.

These two parts have interchangeability.

These two software are completely interchangeable.

Education about sex is very important.

Can you answer this question?

Data mining is the process of extracting useful information from a large amount of data.

The analysis of big data is essential for business strategy.

Free software plays an important role in enhancing the convenience of computers.

My company is working on the development of a new vaccine software.