сейча́с

now, at this moment

• Nun ist es dein Problem.

  Теперь это твоя проблема.

  Tatoeba · nubok · CC BY 2.0 FR

• Nun ist es Zeit, Gute Nacht zu sagen.

  Теперь пришло время сказать спокойной ночи.

  Tatoeba · Manfredo · CC BY 2.0 FR

сейча́с

now, then; expressing a logical or temporal consequence

• Nun ja, wenn du willst, mache ich es.

  Well, then, if you want me to, I'll do it.

  Tatoeba · Zaghawa · CC BY 2.0 FR

• So war es früher nun mal.

  That's just the way things were back then.

  Tatoeba · Naina · CC BY 2.0 FR

сейча́с

unstressed and expletive, used for minor emphasisредкое

now, well, so

now that, given that it has occurred that the circumstances do not withstand that …