But there is no deny that there exists imperfect problems yet to be solved.

但不可否认，其体制本身还存在许多不完善的地方。

youdao

Some specific problems have yet to be solved.

一些具体问题还有待解决。

youdao

The technological problems of doing that efficiently and economically are yet to be solved.

如何使这一过程高效、经济依然是个有待解决的技术问题。

youdao

Indeed, for all the efforts of governments and central banks, many of the global economy's long-term problems have yet to be solved.

ECONOMIST: A bearish perspective on the market in 2011