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.
technique
Noun
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A technique is a specialized and skillful way of doing something.
It is important for pilots to be taught the right technique for the take-off run.
The scientists will use a new technique to measure the exact speed of the moon.