However hard she tried, nothing seemed to work.

无论她多么努力，好像都无济于事。

《柯林斯英汉双解大词典》

You couldn't earn much, however hard you worked.

无论你干得多卖力，你都挣不了多少钱。

youdao

However hard we fall, we will recover sufficiently to land another hammer blow on the biosphere.

无论我们摔得有多惨重，我们仍能恢复到再给生物圈来一次重击。

youdao

However,snow can become hard and flat as it becomes older or if there have been strong winds.

VOA: special.2010.01.05

However,other people worked hard and found good lives in the West.

VOA: special.2010.03.17

Life seems to be back to normal. However,in the small coastal communities hit hard by the tsunami, signs of devastation and loss are everywhere.

VOA: standard.2009.10.05

But however hard he tries, he will not be able to make it entirely boring.

ECONOMIST: Lexington

And a nickname - Clutch - that he couldn't shift, however hard he tried.

BBC: Norfolk - Prose: Coming Home

However hard governments try to take a broad strategic view, day-to-day events inevitably dominate.

ECONOMIST: A new world order | The