The area source model of particulates was deeply researched, and the places of the initial precipitation of the area sources of particulates were determined.

对颗粒物面源模式做了深入研究，确定了颗粒物粒子面源开始沉降的位置。

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Indoor pollution, which includes sources like home heating and cooking, has remained constant over the past several decades despite advances in the area.

在过去几十年中，来源于诸如家庭供暖和烹饪等的室内污染持续存在，尽管在这方面已经有所改进。

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The researchers used existing data sources to assess how much of the study area each of these habitats occupies and the patterns of land use in each.

研究者们利用现有的数据资源来评估这些物种占地中每一部分研究领域所需的费用以及每块地使用形式。

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Developing sources in the area has been extremely difficult.

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The family was on tour at the Waza National Park in Cameroon's Far-North Region before they were abducted at gunpoint by five gunmen aboard motorbikes, according to paramilitary sources in the area.

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Eventually, the networking of forces will enable all units to possess a common picture of the battle area reflecting inputs from dozens of sources, including unmanned aerial vehicles like Global Hawk, spy satellites, and Special Forces on the ground.

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