Picture two sheets of paper with a dark, sheet between them. You press once on the top sheet, and a second sheet is written at the same instant, matching the first line for line. Every use of this phrase grows out of that one press: the sheet it produces, the idea of two things matching exactly, and the email that reaches a second reader in the same send.
可以想成兩張紙中間夾了一張塗了碳的黑紙。你在最上面壓一次，下面那張就同時寫好，一行一行都對得上。這個詞的所有用法都從這一壓長出來：壓出來的那張紙、「像到一模一樣」的概念，還有按一次寄出、第二個人同時收到的那封郵件。
登入就可以看每一支怎麼連回核心畫面。