例句與造句

1. The exploitation of bituminous rocks and natural seep deposits dates back to paleolithic times.
2. In many cases, these early pavings were made from naturally occurring " bituminous rock ", such as at Ritchie Mines in Macfarlan in Ritchie County, West Virginia from 1852 to 1873.
3. Operations and land acquisitions continued to expand over the next twenty years; encompassing expanded lime production, cattle and milk cows, bituminous rock mining, tan oak bark ( used in leather tanning ), grain and fruit.
4. It's difficult to find bituminous rocks in a sentence. 用bituminous rocks造句挺難的