to maintain communication with someone
mit jemandem in Kontakt bleiben (mit jemandem in Kontakt bleiben)
"Even after moving away, we keep in touch regularly."
"Selbst nach dem Umzug bleiben wir regelmäßig in Kontakt." (Selbst nach dem Umzug bleiben wir regelmäßig **in Kontakt**.)
to honor a promise or commitment
to be able to say something during a conversation dominated...
knowledgeable from studying rather than experience
Stay motivated even after setbacks.
to be physically fit and healthy
to stop being interested in something