Usages of nachfüllen
Wir öffnen das Absperrventil und füllen Wasser nach.
We open the shut-off valve and top up the water.
Für den Fall, dass der Wasserdruck sinkt, wird nachgefüllt.
In the event that the water pressure drops, it is topped up.
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“How do German cases work?”
German has four grammatical cases: nominative (subject), accusative (direct object), dative (indirect object), and genitive (possession). The case determines the form of articles and adjectives. For example, "the dog" is "der Hund" as a subject but "den Hund" as a direct object.
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