sackless

A good book can soften the stiff soul and refresh the sackless thinking.

一本好使僵硬的灵魂变得柔软，使麻木的思想重获新生！

I see that they are sackless now and they won't doubt any plan of the shcool.

我知道，他已经麻木了，对于学校的安排，他不再有更多的想法。