例句與造句

1. The extraction of ore from the mines was labour-intensive.
2. Poa
   epn?is considered the founder of deposit geology, whose findings enable a more efficient extraction of ore.
3. Preparations were made for the extraction of ore and the opening of a mine, but the project failed.
4. This resulted in the flooding of mines which limited the extraction of ore to shallow depths close to the surface.
5. Balhashtcvetmet specialises in the extraction of ores, metal processing and the production of non-ferrous metals and their alloys.
6. It's difficult to find extraction of ore in a sentence. 用extraction of ore造句挺難的
7. It is thought that the poisonings were caused by the illegal extraction of ore by villagers, who take crushed rock home with them to extract.
8. In a few following months the Reichswerke, once an insignificant German steel company, consolidated most of Austrian heavy industries, from extraction of ore to production of advanced weapons.
9. The extraction of ore in the region also contributed to the tiny port city of Duluth thriving and becoming the leading port in the United States ( by tonnage ) in the early 20th century.
10. The discovery and subsequent frequent extractions of ores at Kargaly occurred either near the end of the fourth millennium  !  or at the turn of the third millennium  !  ( Early Bronze Age ).