有些人觉得对这一领域的任何研究都是所谓无用功，不过我认为并非如此。
Some people think any work in this area is junk research, but I think that's wrong.
那天我还告诉她我感到自己如此老迈无用。
当今社会无用信息如此之少，实为憾事。
It is a very sad thing that nowadays there is so little useless information.
当今社会无用信息如此之少，实为憾事。
It is a very sad thing that nowadays there is so little useless information.
应用推荐