dem

• Article

  dative masculine/neuter singular of der: the

• Pron

müssen

1. to have to (do something); must; to be obliged (to do something); to need (to do something).
2. to have to do something implied; must; to be obliged.
3. (colloquial) to need to go to the bathroom.

wir

we

nachgehen

1. to follow, pursue
2. to run slow
3. to investigate, to follow up