Frequency: The word is one of the 1500 most common words in English.
1.
If you say that something happens ~ a particular period of time, you mean that it happens during the whole of that period.
The national tragedy of rival groups killing each other continued ~ 1990...
Movie music can be made memorable because its themes are repeated ~ the film.
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Throughout is also an adverb.
The first song, ‘Blue Moon’, didn’t go too badly except that everyone talked ~.
ADV: ADV with cl
2.
If you say that something happens or exists ~ a place, you mean that it happens or exists in all parts of that place.
‘Sight Savers’, founded in 1950, now runs projects ~ Africa, the Caribbean and South East Asia...
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Throughout is also an adverb.
The route is well sign-posted ~...
ADV: ADV with cl