In a recent study, Stephen Saunders Webb has presented a formidable challenge to this view.

在最近的一项研究中，斯蒂芬·桑德斯·韦伯对这一观点提出了严峻的挑战。

youdao

Now it faces a formidable challenge.

而如今，它正面临着难以对付的挑战。

youdao

But Gowalla faces a formidable challenge.

但Gowalla公司正面临艰巨的挑战。

youdao

But,it says wiping this deadly disease from the face of the earth poses a formidable challenge.

VOA: standard.2010.05.21

South Africa's youth presents a formidable challenge to people who want to entice them.

BBC: Young turn their back on politics

Australia is widely expected to be in the final game and to pose a formidable challenge.

FORBES: U.S. Women's Basketball Shoots for the Gold

The middle-aged Rachel needs to be plausibly the same person who faced a formidable challenge, back in Berlin.

NEWYORKER: Private Wars