0 A piercing noise, light, etc. is very strong and unpleasant. -- acuto, penetrante
1 loud; shrill -- penetrante, acuto
a piercing scream.
2 (of cold weather, winds etc) sharp; intense -- pungente, penetrante
3 looking intently or sharply as though able to see through things -- penetrante
piercing eyes
a piercing glance.
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.