1·After man died, if the situation was truly as what Mr. Skull said, would it be silly that we rack our brain to prolong our life?
人死之后的境况，如果真如这位髑髅先生说的那样，那么我们用尽心力以延长生命所作出的种种努力，岂不是都要白费了吗？
2·I am rack my brain, but I don · t know his mean.
他绞尽脑汁，但是都不能想出这个问题的答案。
3·We'll have to rack our brain and think of some effective measures.
我们得绞尽脑汁想出一些行之有效的办法。
4·We'll have to rack our brain and think of some effective measures.
我们得搜索枯肠想出一些卓有成效的措施。