This year's competition challenges participants to make that personal connection with their audience.

今年比赛着重挑战参赛者同观众达成情感纽带的能力。

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Competition challenges us to stay in shape and make our tools deliver much more functionality and productivity benefits than free tools do.

竞争迫使我们保持最高水准，并要求我们的工具比那些免费工具提供更多的功能、更高的工作效力。

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The annual Zombie Safe House competition challenges architects to design the best ghoul-proof home, and zombie "fun runs" are now regular events across North America.

WSJ: Why Zombies Are Everywhere

Meet Hugh Lyman, the winner of the competition, who challenges any pre-conceived notions about 21st century inventors and entrepreneurs.

FORBES: Internet Revolution 2.0: 3D Printing

He said Icetech had been facing two challenges - competition from cheaper Chinese imports and last year's collapse of the Comet electrical goods chain.

BBC: Warning over collapse of Caithness freezer maker Icetech