细颗粒物 Traditional 細顆粒物 xì kē lì wù 🔊 fine particle (PM 2.5) + Keep this word Meanings xì kē lì wù 細顆粒物 fine particle (PM 2.5)fine particulate matter (air pollution etc) Its characters 细xìthin or slenderHSK 4颗kēclassifier for small spheres, pearls…HSK 5粒lìgrain; granule; pellet; particleHSK 6物wùthing