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- Compared with 1983, anthropogenic sources obviously increased and natural sources decreased in winter. 与1983年相比，北京市冬季人为污染明显增加，自然沙尘污染有减少的趋势。
- Anthropogenic sources are also diverse, and unfortunately also typically very concentrated, and include a variety of combustion and industrial activities. 人为源的大气污染也是形形色色的，而不幸的是，它们往往非常集中，包括各种燃烧和工业活动。
- The ferrimagentic mineral is mainly detrital in origin, but in the magnetic enhanced sediments at site Shidongkou occur some spherical magnetic particles derived from anthropogenic sources. 除了碎屑成因磁铁矿外，在磁性最强的石洞口沉积物中还出现了球状磁性颗粒，与化石燃料（如煤）高温燃烧过程中生成的球状磁铁矿相似，主要系人类活动的产物。
- Concentration ratios of formaldehyde/acetaldehyde and acetaldehyde/propionaldehyde showed that anthropogenic sources were the main sources of carbonyl compounds in the atmosphere of Guangzhou. 甲醛／乙醛、乙醛／丙醛质量浓度比值显示广州大气中羰基化合物主要与人为来源有关。
- The news comes from a reliable source. 这消息来自可靠的来源。
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- Solar energy is a new kind of source of energy. 太阳能是一种新型能源。
- The sun is the ultimate source of energy. 太阳是能量的最基本来源。
- A source of irritation or annoyance. 令人生气的事或者引起烦恼之事
- Keywords air quality model;anthropogenic sources;ozone;contribution ratio; 空气质量模式;人为源;臭氧;贡献率;
- The groundwork or source of something. 基础，根源某事物的基础工作或根源
- Where is the source of the Rhine? 莱茵河发源于何处？
- He's been a source of discord and worry. 他成为不和和烦恼的根源。
- A source of harassment, annoyance, or pain. 使人痛苦的东西骚扰，烦恼或痛苦的来源
- Is the water polluted at source or further downstream? 河水是在源头还是在流出之後受到污染的？
- Hard work is the ultimate source of success. 努力工作是成功之本。
- The proof came from a plenteous source. 证据来自丰富的渠道。
- Do you know the source of Amazon River? 你知道亚马逊河的源头吗?
- anthropogenic source 人为源
