Englishfor English speakers
investigate
Verb
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If you investigate a problem, you get information about it and you think carefully about the information, usually to find an answer.
We won't know what happened until it is more thoroughly investigated.
Police investigated 169 complaints about noise between December and January.
Researchers continue to investigate new ways of finding lies.
Your child's family doctor should investigate whether there may be a sleep problem.
More work is needed to investigate other .
material
Noun
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Material is the things or ideas that are used in making or doing something.
The raw materials for the goods are mostly imported from Canada.
After the earthquake, it took a long time to rebuild because the building materials were often unavailable.
He spent a year researching and gathering material before writing the book.
material
Adjective
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Material things are things in the real world, often money.
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If something is material, it is big and important.