The shifting landscape and unpredictable climate will always pose a challenge.

不断变化的地貌和捉摸不定的气候将永远是一种挑战。

Sporadic eruptions in the banlieues of Paris pose a challenge on his doorstep.

巴黎郊区偶发的骚动成为他的论据。

Some other steps which are required may pose a challenge if not implemented correctly.

如果没有正确地实现，必需的其他一些步骤可能会造成问题。

Getting rich remains glorious for many Chinese, but such aspirations pose a challenge to the government's attempt to bridge a potentially divisive rich-poor divide.

对于许多中国人来说，致富是光荣的，然而这些期望也给政府缩减潜在的贫富差距来带来挑战。

Second, I suspect that the West cannot accept the concept of Asian values because the latter could pose a challenge to Western intellectual hegemony.

第二、我怀疑西方之所以不能接受亚洲价值观，是因为后者很可能正面挑战西方的知识霸权。

Mission scientist Kurt Retherford of the Southwest Research Institute in San Antonio, Texas, thinks the discovery of mercury could pose a challenge for any human settlers because of its toxicity.

参与任务的科学家，在德克萨斯州圣安东尼奥西南研究所的库尔特·里斯福特认为，由于水银的毒性，水银的发现会对人类移居月球造成挑战。