Grandpa was celebrating his 100th birthday, and everyone was complimenting him on how well he looked.

"I'll tell you the secret," he said. "My wife and I were married seventy-five years ago. On our wedding night we made a pledge that whenever we had a fight, the one who was proved wrong would go out and take a walk. I have been in the open air continuously for the past seventy-five years.

爷爷过一百岁生日，大家都祝贺他，说他看上去很健康。

“我来告诉你们这里的秘密，”他说，“我和妻子结婚七十五年了。在新婚之夜我们订了一个誓约，那就是无论我们什么时候发生争吵，谁被证明是错了的，谁就到外面去散一圈步。我已经在外面一直呆了七十五年了。”