We warned them, but to no effect.

我们曾告诫过他们，但没起任何作用。

《牛津词典》

He spoke to no effect.

他讲话不起作用。

youdao

Mothers' work hours showed modest to no effect on bullying behavior.

结果显示，母亲的工作时长并没有对产生这种不良行为产生影响。

youdao

And until BP finds a way to stem the flow, no one can estimate the full effect of this disaster on BP, its shareholders,or employees.

VOA: standard.2010.06.18

Another side effect if you take too much lithium is death, so that's no good to have in sodas either, and it might not have been as big a deal back in the 1920's, but you can imagine with supersizing today, this might be a bigger problem.

另一个副作用是因为摄入锂过量而死，这更说明在汽水里放这种东西是不好的，这在二十世纪二十年代可能没什么大问题，但你可以想象在如今这个什么都超标的时代，这也许会出更大的问题。

麻省理工公开课 - 化学原理课程节选

Then Smith threw a few haymakers to no effect and lost an otherwise forgettable fight.

FORBES: Move up http://i.forbesimg.com t Move down

They regularly troop off wailing to the Constitutional Court, but so far to no effect.

ECONOMIST: A not-so-model system

The mandate to buy health insurance would have little to no effect on any of these, and many other, provisions.

FORBES: Can ObamaCare Survive an Unconstitutional Mandate?