Englishfor English speakers
investigation
Noun
—
An investigation is a careful look at a crime, problem, etc. to find the truth or a solution.
Researchers were conducting further investigations into the connection between smoking and lung disease.
The cause of the fire is currently under investigation.
of
Preposition
—
Made using.
It is a house of cards.
crime
Noun
—
A crime is an act that is against the law and for which you can go to jail.
Murder is a crime.
New York has a lot of crime.
—
A crime is an extremely bad action.
Letting that puppy die is a crime.