I'm referring, of course, to the proverbial frog that, placed in a pot of cold water that is gradually heated, never realizes the danger it's in and is boiled alive.

没错，我说的就是著名的“温水煮蛙”，冷水锅中的青蛙在逐渐升温的水中怡然自得，丝毫没有感到危险来临，直到被活活煮死。