What is that? 猜猜猜

來源: 於 2022-01-07 15:05:00 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

What is that which goes up the hill and down the hill and yet stands still?

什麽東西上山又下山, 然而卻原地不動？