For the Middle East and North Africa (MENA) region, one of the world's most water-scarce regions, this challenge is far greater.

对中东和北非(MENA)地区(世界上最缺水的地区之一)来说，这个挑战更为艰巨。

youdao

Another challenge for Africa is the decline of informal systems of social protection. That is, cash and support from both the extended family and community sources.

非洲面对的另一个挑战是非正式的社会保障制度的衰退，也就是来自于大家庭和社区的资金和各项支持的衰退。

youdao

They've been supporting our efforts in West Africa to fight the Ebola epidemic and save lives. Because in times of crisis and challenge, the world turns to America for leadership.

他们为我们在西非抗击埃博拉疫情、挽救生命提供了持续不断的支持，美国的领导力得到全世界的认可。

youdao

That is in addition to billions of dollars of aid to the Middle East and North Africa, including a $700-million Millennium Challenge Corporation grant to Morocco for fruit tree farming and small-scale fisheries as well as stronger financial services and enterprise support.

VOA: standard.2009.11.03

The challenge for South Africa is not to make decisions based on what might appear to be diminished capacity to manage infrastructure projects.

FORBES: Poor Infrastructure Is Africa's Soft Underbelly

If it proves successful, the modified two-challenge rule will also be introduced for Australia's Test tour to South Africa, which is the last tour included in the referral trial.

BBC: Referrals change for England tour

After the challenge 2010 hosts South Africa has faced getting facilities ready for the continent's first World Cup, and with 2014 hosts Brazil having already been criticised for falling behind schedule, England will hope they catch the eye of Fifa by representing a safe pair of hands.

BBC: Beckham hands over England 2018 World Cup bid