Authors:

You do not have to explain every single drop of water contained in a rain barrel. You have to explain one drop-H2O. The reader will get it.

George Singleton (2008). “Pep Talks, Warnings, And Screeds: Indispensable Wisdom And Cautionary Advice For Writers”, p.46, Writer's Digest Books
You do not have to explain every single drop of water contained in a rain barrel. You have to explain one drop-H2O. The reader will get it.