我的名字叫粉尘,有三个同胞兄弟,老大叫无机粉尘,老二叫有机粉尘,老三叫混合性粉尘。可是,我们是“大家族”,成员很多,有的叫矽尘、石棉尘、水泥尘、滑石尘、炭黑尘,云母尘、石墨尘,还有的叫焊尘、煤尘,兄弟姐妹很多。 My name is dust, there are three siblings, the boss called inorganic dust, the second is called organic dust, the third is called mixed dust. However, we are a “big family” and have many members. Some of them are called silica dust, asbestos dust, cement dust, talc dust, carbon black dust, mica dust, graphite dust, and many are called welding dust, coal dust and many siblings .