柯林斯词典microfossil /ˈmaɪkrəʊˌfɒsəl/ 1. N a fossil generally less than 0.5 millimetre in size, such as a protozoan, bacterium, or pollen grain 微躰化石 返回 microfossil剑桥词典a fossil that is too small to see without using special equipment 微化石，微躰化石 返回 microfossil