He challenged the status quo and called for action.

他向当时的现状发起挑战，号召人们行动起来。

Adventurers take on these challenges all the time.

冒险者无时无刻不接受着新的挑战。

As so often is the case, stating that principle doesn't ease the challenge of line-drawing.

即便如此规定，但也很难帮助我们做到泾渭分明，这种事情也是时有发生。

And they can challenge government propaganda by creating alternative media.

他们还可以通过创造其他的媒体方式 挑战政府传活动。

Well, he said old challenges demand new approaches.

他说，旧的挑战需要新的方法。

This enabled me to ascend to greater heights and greater challenges.

这让我能够攀登更高的高度，并迎接更大的挑战。

But building the infrastructure is a challenge.

但基础设施建设仍然是摆在眼前的难题。

" Getting high skilled people is still a challenge."

“到技术精湛的人员仍是个问题。”

You enter the world at a time of great challenge.

你们生活在一个充满挑战的时代。

A challenge like that would test your mettle.

这项挑战很验你的意志。

I'm the kind of person who needs new challenges to stay focused.

我是那种需要新挑战来保持专注的那类人。

Yeah, I agree. What about the subject matter — I found it really challenging!

是的，我同意。主题怎么定呢？我觉得这个太有挑战性了。

The big surf proved even more of a challenge for Bali.

大浪对巴利更有挑战性。

I had met the challenges of solo travel in an extreme climate.

我面对了在极限气候下单枪匹马旅行的挑战。

Stress is a feeling we all experience when we are challenged or overwhelmed.

当面临挑战或感到无助时，我们可以清晰的感受到压力的存在。

We shouldn't be daunted by the challenges we face.

严峻的挑战不会击垮我们。

Now the monsoons pose a new challenge.

现在，季风带来了新的挑战。

That's the challenge, that's the voyage, that's the expedition.

那是挑战，那是旅行，那是探险。

And keeping other invasive species from arriving in the meantime is also a challenge.

同时防止入侵生物入境也是一大挑战。

He explains how he faces those challenges in today`s " Great Big Story" .

他在今天的“Great Big Story”节目中讲述了他是如何克服这些困难的。