When the sole purpose of a tunnel was mineral extraction, construction required less planning, as the tunnel route was determined by the mineral vein.
当隧道的唯一目的是采矿时,施工需要较少的规划,因为隧道路线由矿脉决定。
单词 | mineral veins |
例句 |
原声例句
IELTS Reading When the sole purpose of a tunnel was mineral extraction, construction required less planning, as the tunnel route was determined by the mineral vein. 当隧道的唯一目的是采矿时,施工需要较少的规划,因为隧道路线由矿脉决定。 |
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