62. Let‘s smash it and build something better on the ruins .
on the ruins ： the remains of destroyed or decaying or town 废墟，遗迹，残骸。
如：the ruins of a castle 一座城堡的废墟
63. These are the ones whose revolution did not come off ， ……
come off ： happen ， occur 发生。
如：The invasion came off last week . 入侵是上星期发生的。
To be effective or successful 生效，成功。
如：She didn‘t come off well in the interview . 她的面试不很成功。