叫什么可入肺颗粒物。是一种监测空气质量的术语。最近才受到关注。
jiào shénme kěrùfèi kēlìwù 。shì yīzhǒng jiāncè kōngqì zhìliàng de shùyǔ 。zuìjìn cái shòudào guānzhù 。
It's called particulate matter or something. It's a technical term for measuring air quality and has been getting a lot of attention recently.