through
from one side to the otherShe walked through the park.
She moved from one side of the park to the other.
informal
Moving from one side of something to the opposite side; across.
The train passed through the tunnel.
The train entered the tunnel and emerged on the other side.
Used as a preposition to describe physical movement.
formal
By means of; using as a channel or medium.
Send the documents through email.
Transmit the documents using email as the medium.
Often paired with nouns like 'mail', 'email', 'pipeline'.
English Dictionary