First of all talk about "particulate matter composed of" Teaching.
首先谈谈关于“组成物质微粒”教学的思考。
Fine particulate matter is linked to respiratory ailments, heart disease, stroke and premature death.
微细颗粒物跟呼吸系统疾病、心脏病、中风和早逝有关。
Fine particulate matter is linked to respiratory ailments, heart disease, stroke and premature death.
微细颗粒物跟呼吸系统疾病、心脏病、中风和早逝有关。
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