alert, smart, and quick to react
внимательный, умный и быстро реагирующий (vnimatelniy umniy i bistro reagiruyushchiy)
"You need to be on the ball to handle this job."
"Ты должен быть внимательным, чтобы справиться с этой работой." (ti dolzhen byt vnimatelnym chtoby spravit'sya s etoy rabotoy)
to start something from the very beginning
to process and analyze large amounts of data
to aim for something very ambitious or difficult to achieve
a controversial issue that no one wants to deal with
to decide to do something without being asked or required
something unexpected or surprising
