Die Sanduhr läuft, und ich setze aus.

Sanduhr is a compound noun: Sand + Uhr.

In German, the last part of a compound noun decides the gender. Since die Uhr is feminine, the whole word is also feminine:

• der Sand
• die Uhr
• die Sanduhr

So the article is die.

German very often combines nouns into a single compound word.

So instead of writing something like sand clock as two separate words, German makes one noun:

• Sand = sand
• Uhr = clock, watch, timer
• Sanduhr = hourglass

This is completely normal in German. English sometimes does something similar, but German does it much more consistently.

The verb laufen does not only mean to run in the physical sense. It can also mean that something is running, working, or in operation.

That is why German can say things like:

• Die Uhr läuft. = The clock is running.
• Der Motor läuft. = The engine is running.

So Die Sanduhr läuft means the hourglass is running, in the sense that time is passing and it is doing what it is supposed to do.

The full verb is aussetzen.

This is a separable verb:

• infinitive: aussetzen
• in a main clause: ich setze aus

So the verb is split into:

• setze in the usual verb position
• aus at the end

This is very common with separable-prefix verbs in German.

Because aussetzen is separable.

In a normal main clause, German usually puts the conjugated part in second position and sends the separable prefix to the end:

• Ich setze aus.
• Er steht auf.
• Wir machen mit.

But in the infinitive, the parts stay together:

• aussetzen
• aufstehen
• mitmachen

So aus is at the end because that is how separable verbs behave in main clauses.

Aussetzen can have several meanings depending on context, so learners often find it tricky.

Possible meanings include things like:

• to fail or cut out
• to stop functioning briefly
• to skip something
• to suspend something
• in some contexts, even to abandon or expose

In this sentence, the intended meaning is something like I fail / I give out / I stop functioning / I blank out, depending on the translation you were shown.

That is one reason this sentence can feel difficult: aussetzen is not a simple one-meaning verb.

Because the verb here is just aussetzen, not a reflexive verb.

German has many verbs with setzen, and they can mean different things:

• setzen = to set, place
• sich setzen = to sit down
• aussetzen = depends on context; here, to fail / cut out / stop

So this sentence is not using sich setzen. Even though setzen by itself may look familiar, the separable prefix aus- changes the meaning completely.

Because und is a coordinating conjunction. It links two main clauses and does not force the verb to move to the end.

So the structure is:

• Die Sanduhr läuft
• und ich setze aus

Both are normal main clauses.

Compare that with a subordinating conjunction like weil, which would push the verb to the end:

• ..., weil ich aussetze.

So after und, the clause keeps ordinary main-clause word order.

German main clauses usually follow the verb-second rule.

In the first clause:

• Die Sanduhr = first element
• läuft = second-position verb

In the second clause:

• ich = first element
• setze = second-position verb
• aus = separable prefix at the end

So the sentence follows standard German main-clause structure.

German often uses the present tense for things happening right now, just as English does.

• Die Sanduhr läuft = the hourglass is running
• ich setze aus = I am failing / I give out

German does not need a special progressive form like English am running or am failing. The simple present often covers that meaning.

Yes, Sanduhr is the normal German word for hourglass.

Literally, it is something like sand clock, but in real usage it simply means hourglass. Even if the time measured is not exactly an hour, German still uses Sanduhr for the object.

Definitely. This is a very common learner problem.

Many German prefix verbs have a wide range of meanings, and aussetzen is one of them. The exact sense often depends on:

• the subject
• the object, if there is one
• the wider context

For example, a machine, a heartbeat, or a person can all aussetzen, but the natural English translation may differ in each case.

So when learning this verb, it is better not to memorize only one English equivalent. It is more useful to remember the core idea that something stops, fails, or is interrupted in some way.