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English definition of “through”

through

preposition
 
/θruː/
A2 from one end or side of something to the other: The River Seine flows through Paris. The Mississippi River flows through New Orleans.
B1 from the beginning to the end of something: He worked through the night.
B1 because of someone or something: She got the job through hard work.
B1 using something, or with someone’s help: I met my girlfriend through my brother.
US from one time until another time: The store is open Monday through Friday.
(Definition of through from the Cambridge Essential Dictionary © Cambridge University Press)
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