balance bob造句
造句与例句
手机版
- During the 1870s a series of accidents caused the mine to flood, including flooding in 1873 when it closed by five months and flooding again in January 1879 when the balance bob broke in two places in Richards'Shaft . After the accidents and the fact the mine was not especially economically viable it ceased operations for the final time in February 1884.
- It's difficult to see balance bob in a sentence. 用balance bob造句挺难的
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