英语
西班牙语
英语
西班牙语
单语范例（未经PONS编辑处理）
It was originally built with two pairs of millstones, and some of the machinery was to be second hand.
en.wikipedia.org It drove two pairs of 1.40 m diameter millstones.
en.wikipedia.org There were also family businesses in curbstone and millstone making, and in making roadbuilding materials.
en.wikipedia.org It involves the analogy of the cosmos or firmament and a rotating millstone.
en.wikipedia.org Two of the four pairs of millstones are controlled by a single governor.
en.wikipedia.org