erdoorheen
erdoorheen is a Dutch prepositional phrase that translates literally to "through it" or "through there." It functions similarly to the English preposition "through" and is used to indicate movement or passage from one side of something to another. The "er" acts as a placeholder pronoun, referring to an antecedent or a general location that is understood from context. The "doorheen" part signifies the act of passing or permeating.
For instance, in the sentence "De trein rijdt erdoorheen," it means "The train is going through it"