Measurements as applied in the database, including reported PM10 levels, represent annual averages.

包括报告的PM 10水平在内，数据库中采用的测量数代表年度平均值。

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The world's average PM10 levels by region range from 21 to 142 ug/m3, with a world's average of 71 ug/m3.

各区域平均PM10(粒径范围为10微米的细微粒)水平范围为21~142ug/m3,世界平均水平为71ug/m3.

youdao

They also include very small dust particles called PM10, that get deep into our lungs and harms our ability to breathe.

还包括极小的灰尘颗粒，叫PM 10，它会深深的潜入我们的肺，损害我们的呼吸功能。

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PM10 is produced by exhaust fumes as well as tyre and brake wear and can cause asthma, cardiovascular problems, lung cancer and premature death.

BBC: Boris Johnson sticks by gluing pollution to roads

The report also says that the congestion charge has caused reductions in the two most concerning pollutants to London, by 8% for nitrogen oxides and 7% for particulate matter that is fine enough to penetrate the lungs and cause health problems (referred to as PM10).

FORBES: Paul Maidment

The combined effect of charging and improved vehicle technology, notably cleaner-burning diesel engines that are being used in more buses and taxis, has led to an overall reduction of 13% in nitrogen oxides and 12% in PM10 via vehicle tailpipe emissions in the charging zone.

FORBES: Paul Maidment