German phrase
Mach im ~ keinen Lärm!
Meaning
Don't make noise in the ___!
When to use it
It tells someone to be quiet. Use it with family or friends in places like buses.
Example dialogue
Ich singe im Bus ganz laut!
I sing very loudly on the bus!
Mach im Bus keinen Lärm!
Don't make any noise on the bus!