Learn German: Wir duschen nur kurz, weil wir Wasser sparen. - We only take short showers because we are saving water.

The word weil (because) is a subordinating conjunction. This means it kicks the conjugated verb in its clause (sparen) all the way to the end. Normally, you would say wir sparen Wasser, but weil changes the order to weil wir Wasser sparen.

Why does the German sentence say nur kurz instead of something like "kurze Duschen"?

In English, we often use a noun phrase like "take a short shower". In German, it is much more natural to use the verb duschen (to shower) and describe how you do it with an adverb: kurz (briefly or shortly). Literally, the German says "We shower only briefly."

The English translation says "are saving water". Why is there no translation for "are" in the German sentence?

German does not have a separate continuous tense (the "are ...-ing" form) like English does. The simple present tense wir sparen covers both "we save" and "we are saving". Adding a word for "are" here would be grammatically incorrect in German.

Is the comma before weil required?

Yes! In German, punctuation rules are strict. You must always use a comma to separate the main part of the sentence (Wir duschen nur kurz) from a dependent part introduced by a word like weil.