A good analyst will identify the key problem.

一个好的分析员会找到关键问题。

So far, only superstring theory can solve this key problem.

到目前为止，只有超弦理论能解决这个关键问题。

Production efficiency of aluminum smelters is another key problem.

炼铝厂的生产效率是另一关键问题。

It's a key problem for us to fully understand the Mass Culture.

这是我们理解有关大众文化一切问题的关键。

Immunological rejection is the key problem of cell transplantation.

免疫排斥是细胞移植面临的关键问题。