0 a gas that makes people’s eyes hurt, used by the police or army to control violent crowds -- gas lacrimogeno
1 a kind of gas causing blinding tears, used against eg rioters -- gas lacrimogeno
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.