We are clear-eyed about the challenge of mobilizing collective action, and the shortfalls of our international system.

对于调动集体行动的挑战和我们的国际体制存在的弱点，我们洞悉明察。

youdao

The challenge remains to describe the relevant service interfaces of a system.

描述系统的相关服务接口仍然是一个挑战。

youdao

The challenge of creating a living system of any size is daunting.

要想创造一个有生命的系统，无论大小，所面临的挑战都令人心生畏惧。

youdao

And I think that our challenge and the country's challenge is to get to the point where we can afford the healthcare system that we have in our country."

VOA: standard.2010.02.25

And we challenge ourselves to do the system design so that we responsibly took into account all of the dimensions that we talked about at the beginning.

我们通过做这个,制度设计挑战自我,以便于充分考虑,我们最初谈到的,所有方面。

麻省理工公开课 - 媒体、教育、市场课程节选

It's inevitable that when you challenge the system to do better, you will get some pushback.

BBC: Teachers vow to press on with strike plan

The biggest challenge facing the system was the "significant increase" in life expectancy, she told MPs, as she opened a backbench business debate on the matter on 8 March 2012.

BBC: MP's warning on adult social care

Tilden won his six straight U.S. Open titles from 1920-1925 - a record since the tournament abolished the challenge system - where the champion automatically qualified for the final - in 1911.

CNN: Federer closes on Tilden's U.S. Open record