patch of ore造句

例句与造句

1. It is illustrative particularly of mines with small reefs with rich patches of ore, which were worked consistently on a small scale.
2. A small patch of ore above the north end of the Lucy Tongue Level was opened up in the 1890s, known as the "'Alma Workings " '.
3. It's difficult to find patch of ore in a sentence. 用patch of ore造句挺难的