单词	balck shale
释义	balck shale 黑色页岩
随便看	county and township fiscal county and township revenue county and township statistical work county and western county archive countyard county area county area economic competitiveness county area economy county area finance County areas county cooperation economy organization county cooperative county corporate county areas economy county area tourism county area tourism economy county as center county assembly county attorney county attornty county audit bureau county autonomy county bank county bank industry