I believe there is no challenge so great or so difficult that it cannot be overcome by America, Britain and the world working together.

我坚信，在英美及世界其他国家的强强联手下，没有什么困难与挑战是克服不了的。

youdao

People of the world — look at Berlin, where a wall came down, a continent came together, and history proved that there is no challenge too great for a world that stands as one.

全世界人民，请看柏林。 在这里，一面高墙倒塌，一个大洲凝聚一心，历史证明全世界只要戮力同心，就能所向披靡。

youdao

There's no challenge that you can't overcome.

没有什么问题是你不能解决的。

youdao

There's no vision to it." "There's no goal. There's no challenge." "Obviously there are a lot of people that are unhappy about the potential of altering the future of space flight."

VOA: standard.2010.04.15

So we use his works as a challenge to say "No".

所以我们把他的成就当作一种挑战，说“不”。

以爱因斯坦为榜样 - SpeakingMax英语口语达人

"The biggest challenge of getting life saving vaccines to poor countries is that there's no market.

VOA: special.2010.03.29

No challenge has been mounted thus far in any of the states where it is the law today.

CENTERFORSECURITYPOLICY: American Laws for American Courts

Under conditions where Correa's party is expected to control Congress, no challenge against the executive branch should be expected.

CENTERFORSECURITYPOLICY: Chavez's repression continues

It is that fundamental faith -- that American optimism -- which says no challenge is too great, no mission is too hard.

WHITEHOUSE: President Obama Speaks at the Air Force Academy Commencement Ceremony | The White House