The key of the problem is how to reflect the permutation information of a character sequence.

问题的关键是如何反映字符序列的排列信息。

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The key of the problem is to monitor species and concentration of Aluminum in surface and soil water.

监测地表水和土壤水中的铝形态及浓度变化是问题的关键。

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The key of the problem is not to find out whether education is ontological or essential, but how to question it.

基于后现代主义理论自身的贫困，教育本体论并不能有效解决教育研究中的“本质主义”倾向问题。

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Often the goal is to find the key indicator of a problem or to track the performance of a system.

FORBES: Splunk's Godfrey Sullivan on Overcoming Barriers to Operational Intelligence

Mobeam's patented technology solves the key problem that has limited the progress of mobile commerce - the vast majority of existing POS systems are unable to communicate with smartphones.

ENGADGET: Samsung partners with Mobeam to offer scannable bar codes on the Galaxy S 4

The government saw elected mayors as the key to the unresolved problem of English devolution.

BBC: The flawed concept that saw voters reject city mayors