To grasp the essentials; to seize the main points; to get to the crux of the matter.
在分析复杂问题时，我们需要学会纲提领挈，才能高效地找到解决方案。
When analyzing complex problems, we need to learn to grasp the essentials in order to efficiently find solutions.
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To grasp the essentials; to seize the main points; to get to the crux of the matter.