It is annoying to be honest to no purpose.

没有任何目的的诚实真烦人。

My life grows tired, hungry to no purpose.

我的性命变失疲乏，无由的饿渴。

It is annoying to is honest to no purpose.

毫无意义地忠忠直直是恼人的事。

I have tried hard for her, but all to no purpose.

他想尽一切办法去实现他的目标。

He tried to find out the cause, but all to no purpose.

他试图找出原因，但是全无结果。