They now face perennial power Brazil, a four-time champion at this level, but Tetteh says he is not concerned by the formidable opponent.

VOA: standard.2009.10.15

Okay. So next time we will turn to the somewhat formidable task of understanding Lacan.

好的，下节课我们要,讲到拉康，这将是件艰巨的任务。

耶鲁公开课 - 文学理论导论课程节选

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

VOA: standard.2010.05.21

Along the way he has made some formidable finds and some even more formidable enemies.

BBC: NEWS | UK | England | London | The 'Indiana Jones' of Chelsea

The Bush Administration faces a dual challenge: The formidable threat posed by the Soviet Union and the formidable economic challenge poses by the rapid proliferation of high technology around the world.

CENTERFORSECURITYPOLICY: Center for Security Policy | Why Does The US Want Moscow To Have A State-Of-The-Art Microelectronics Industry?

This represents 19% of global e-Commerce and just 2% of global commerce, leaving generous room for upside. eBay itself is becoming a formidable third-party reseller or marketplace ala Amazon in its own right. eBay has moved beyond a person-to-person auction site to become a formidable marketplace and mobile payment platform. eBay has appreciated from its IPO over 7, 000%.

FORBES: Importance of Being a Platform (Apple, LinkedIn, Amazon, eBay, Google, Facebook)