
Clear as a bell
Crystal clear / As plain as day

Cristallino 
Crystal clear / As plain as day

Cristallino 
Meanings
Fig.: clearly understood
Examples
You don't have to repeat yourself. Your message is clear as a bell
Non c'è bisogno che tu ti ripeta ancora: il tuo messaggio è chiarissimo, cristallino
The lesson for small investors is crystal clear: the average Joe or Jane should stay as far away from Futures as possible
La lezione per i piccoli investitori è cristallina: l'uomo medio dovrebbe stare il più lontano possibile dai titoli FutureOrigin
Bells such as the type used in churches are large and loud. Their sound can be heard from a great distance. Bells sound a single, clear note so their sound is distinctive and not easily confused. Before electric sirens and amplification systems, bells were a valuable means of signaling people and alerting of important events like an impending attack. The bell and the message intended could be heard clearly over a large area