black earth area in Northeast China
black earth degradation
caked calcium carbonate black earth
subtropical black earth
Hilly land in red earth region
Low hilly land in red earth region
orchard in red earth region
Black boned chicken with black feather
spring black stem of black stem of the alfalfa
boundary line of two times between earth excavation area and earth fill area
Earth Day [first Earth Day in 1970]
Arid region and semiarid region
Bachu Region of Xin jiang Autonomous Region
Electric power transmission from western region to eastern region