You remember? And you learned the answer, and you've carried this answer in your head for 10, 20, 30, 40 years: The answer is the same. The answer is the same. So when you're asked what the lengths are, you say they're the same, but they're not the same, because I've changed it.
想起来了？你们那时候知道了答案，记在脑海中，10年，20年，30年，40年。 答案就是一样长。答案就是一样长。所以当你们被问起哪个比较长， 你们会说一样长，但是它们其实不一样长，因为我做了手脚。