0 to look after a child as part of your family for a time, without becoming their legal parent -- affiliare, prendere in affidamento
1 to look after for a period of time; to bring up a child that is not one’s own -- allevare
She fostered the children for several months.
2 to encourage or give help to (ideas etc) -- incoraggiare, favorire
She fostered the child’s talents.
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.
Possiamo completarlo passo dopo passo, indipendentemente dalla lunghezza della strada, e non può essere completato, per quanto breve sia la strada, se non segni nemmeno la tua impronta.