Englishfor English speakers
investigation
Noun
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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.
section
Noun
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A section of a thing or place is a part of it.
The police closed one section of the road because of the accident.
section
Verb
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If you section something, you divide it into parts.