In analysing a situation, it's essential to distinguish the main aspect from the minor ones.

分析形势, 要看清主流和支流.

《现代汉英综合大词典》

The measurements of environmental resource value is main aspect of environmental accounting.

环境资源价值计量是环境会计核算的主要方面.

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Birds communicate by songs, and avian vocalization is a main aspect of ornithology.

鸟类鸣声是鸟类交流的“语言”, 也是鸟类学研究的主要内容之一.

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Wear debris segmentation of different background is also discussed as a main aspect . 4.

重点讨论了不同情况下的磨粒图像分割技术.

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