an extremely small piece of dirt , especially one produced by road vehicles , which causes serious pollution
发音
例句
1. A special group was organized to dig up the particulate of the case. 成立了一个专门小组来查明该案件的各个细节。 2. Lungs retain relatively insoluble particulate material. 肺脏内留有不溶解的颗粒物质。