The security system can detect any unauthorized access.

She is determined to succeed in her career.

The determiner the is used to indicate a specific noun or set of nouns that the speaker or writer is referring to.

The company is developing a new product.

The devil tempted me with riches and power.

She devoted her life to helping others.

She is a devoted mother who always puts her children's needs first.

I had diarrhea after eating that spicy food.

The dictator ruled the country with an iron fist.

I need some time to digest this information.