But factories like this face a challenge.

但是这些厂子也面临一个挑战。

youdao

The results of experiment makes Einstein's view of physical reality face a challenge.

这样的实验结果使得爱因斯坦的物理实在观面临挑战。

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When people face a challenge they sometimes talk about taking a deep breath to find courage or strength.

遭遇挑战的人们有时会说，深吸一口气，拿出勇气和力量。

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The winner will face a tough challenge in the general election against long-time liberal Democratic Senator Barbara Boxer.

VOA: standard.2010.06.08

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

VOA: standard.2010.05.21

He is also expected to face a strong challenge from a candidate representing Macedonia's ethnic-Albanian minority,Imer Selmani, who has been nicknamed the Macedonian Obama after the United States president.

VOA: standard.2009.03.22

Always reluctant devolutionists, they face a challenge to persuade their supporters to turn out at all.

ECONOMIST: Through the looking glass

He may face a challenge in the Republican primary from the state's senior senator, Kay Bailey Hutchison.

ECONOMIST: The Gulf coast is still recovering from hurricane season

Developers face a challenge in trying manage their apps on multiple different operating systems and multiple devices.

FORBES: App Data Crash-Off: Android Jelly Bean Vs. iOS6