0 having a lot (of work etc) to do -- zaneprázdněný, zaměstnán
Looking after two small children keeps me very busy.
2 (of a telephone line) engaged -- obsazený
All the lines to New York are busy.
3 (sometimes with with) to occupy (oneself) with -- zaměstnávat se
She busied herself preparing the meal.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Můžeme to dokončit krok za krokem, ať je cesta jakkoli dlouhá, a nelze ji dokončit, ať je cesta jakkoli krátká, pokud si ani neoznačíte svou stopu.