The new pact has left some important problems unsolved.

这个新法案还遗留了一些重要的问题悬而未决。

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Some problems unsolved in urban traffic flow control system were analyzed.

对中国目前的城市交通流控制系统存在的问题进行了分析。

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Two basic problems unsolved completely in the nonlocal field theory are Studied.

研究了非局部场论中尚未完全解决的两个基本问题。

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Problems like the artificial heart are still unsolved, there's still room for innovation, still room to learn from what hasn't worked before, to learn from science, and to design something better.

人工心脏技术中存在的问题还没有解决,还有创新发展的空间,仍有从未涉足的领域来研究,通过对科学原理的学以致用,去设计出更好的产品

耶鲁公开课 - 生物医学工程探索课程节选

Even when the results are more visible, it will leave many problems unsolved.

ECONOMIST: The American economy: Comeback kid | The

Some long-term problems are unsolved, such as a low rate of participation in the workforce and patchy public services.

ECONOMIST: Poland's strong economy

If so, and if the juridical problems remain unsolved, then the Net would make a big dent in sales taxes.

ECONOMIST: Taxes slip through the Net