делать несколько дел одновременно(Any working parent in New York City will say that life is a juggling act – a frenetic effort to keep all the balls in the air in a fast-paced city that never slows down. – thevillager.comDenzor)
следовать(на каком-либо расстоянии от кого-либо – maintain a fixed position in relation to; выражение происходит из ВМФ: A dozen black 20-foot pilot whales kept station behind us for an hour.4uzhoj)