Dust storms, volcanic eruptions, wildfires, and salt spray from the winds over the ocean are the most common and abundant producers of aerosols.

由风传来的的沙尘暴、火山灰、野火灰以及来自海洋的浪花都是悬浮微粒最为普遍、最为丰富的来源。

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Some aerosols occur naturally like sea spray and volcanic emissions, but NASA estimates ten percent of the total aerosols in the atmosphere are caused by people.

有些喷雾状物是自然形成的，比如说浪花，或火上爆发，但是NASA（美国国家航空宇航局）估计大气中10%的此类物质属于人为造成。

youdao

Some aerosols occur naturally like sea spray and volcanic emissions, but NASA estimates ten percent of the total aerosols in the atmosphere are caused by people.

有些喷雾状物是自然形成的，比如说浪花，或火上爆发，但是NASA（美国国家航空宇航局）估计大气中10%的此类物质属于人为造成。

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