第1682期:给我一个阿基米德
“Give me a lever long enough and a fulcrum on which to place it, and I shall move the world. ” ― Archimedes
阅读全文每天一个新知,不只是英文
“Give me a lever long enough and a fulcrum on which to place it, and I shall move the world. ” ― Archimedes
阅读全文