zavádět co: to introduce something gradually or in stages /stahovat co, zastavovat co postupně
Since we phased in the new working hours and extended the holiday entitlement, the staff are much happier and their productivity has increased signiificantly.
As the new assembly line for our sports cars is phased in we will gradually phase out the old one and retrain all the skilled mechanics. - Jakmile bude uvedena do provozu nová montážní linka pro sportovní automobily, zastavíme postupně starou a přeškolíme všechny kvalifikované mechaniky.