with no result or effect; pointlessly
无结果地，无成效地，徒劳地
relevant or useful
与本题有关的，得要领的，合适的；有用的
you may have heard something from them which is to the purpose.
你或许已从他们那儿听到了一些有关的事情。
Intentionally; deliberately.
故意地；有意地
With good results.
有益地，有成效地
With few or no results.
几乎徒劳的，少有成效地