So the racists racked their brains to get rid of him.

于是种族主义者绞尽脑汁想除掉他。

With students who took the national college entrance exam, or gaokao, already learning their scores, parents and students are racking their brains to plan their futures.

参加高考的学生已经知道了他们的分数，家长和学生们正在绞尽脑汁计划他们的未来。

On the fourth day a happy thought came to the Ork. They had all been racking their brains for a possible way to leave the island, and discussing this or that method, without finding a plan that was practical.

第四天，兽人有了一个愉快的想法。他们一直在绞尽脑汁想办法离开这座岛，讨论着这样那样的方法，却没有找到一个切实可行的方案。