Many challenges remain and much uncertainty continues to cloud the outlook.
尚存诸多挑战，不确定性依然，前景不明。
Many challenges remain and much uncertainty continues to obscure the outlook.
尚存诸多挑战，不确定性依然，前景不明。
In theory stem cells offer the hope of growing new tissues to order, yet in reality, many challenges remain.
理论上，干细胞可以生长出新组织，但在实际中还存在许多挑战。
The health of people in Bangladesh has improved significantly over the last three decades, but many challenges remain.
过去30年来，孟加拉国人民的健康状况大大改善，但仍然存在许多挑战。
While a large number of methods have been established for numerous problems, many challenges remain to be solved.
即便已经建立了很多方法来处理层出不穷的问题，依然还需要面临许多挑战。
A year later, many challenges remain. I look forward to the insights into this experience that will be provided by the papers at this conference.
一年后，许多挑战依旧存在，对于会议材料里纷纷提到的这段经历，我期待好好认识它。
Although substantial advance has been made in CCS technology, many challenges remain, such as the leakage of CO2, technical bottlenecks and high facility construction and operational costs.
虽然CCS技术取得了长足的进步，但仍面临着很多问题，如二氧化碳泄漏问题、技术难点、建设和运行成本高昂等。
However, there remain many challenges that can adversely affect the ability to realize those benefits, including cultural, communication, and process issues.
然而，仍然存在许多逆向影响实现那些好处的能力的挑战，包括文化、沟通，和过程问题。
These experimental approaches have produced some excellent results, although many challenges still remain.
这些实验产生了一些优秀的成果，但仍然面临许多挑战。
However, China will remain in an under-developed stage for a long period of time. There are still many difficulties and challenges ahead of us.
同时，中国处于并将长期处于不发达的阶段，在前进的道路上仍有许多困难和挑战。
Yet, despite the significant gains women and girls have made, too many challenges and barriers remain.
但是，尽管妇女和女孩已取得巨大收获，但依然存在太多的挑战和阻碍。
No doubt many of those differences remain. These are difficult times for our country, and I pledge to him tonight to do all in my power to help him lead us through the many challenges we face.
毫无疑问许多分歧仍然继续存在，我们的国家目前正处在困难之中，但我今夜向他承诺，我将尽我的全力来帮助他领导我们共同迎接目前面临的许多挑战。
No doubt many of those differences remain. These are difficult times for our country, and I pledge to him tonight to do all in my power to help him lead us through the many challenges we face.
毫无疑问许多分歧仍然继续存在，我们的国家目前正处在困难之中，但我今夜向他承诺，我将尽我的全力来帮助他领导我们共同迎接目前面临的许多挑战。
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