Tunnel a hole, shaft, passage, etc.

挖掘洞穴、矿井、通道等。

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Use the OLD PLANK from inventory on the shaft and proceed forward into passage.

使用从轴上库存旧板，将通过继续前进。

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Oil seal: or shaft seal, in machines, a device that prevents the passage of fluids along a rotating shaft.

油封，亦称轴封：机器中用以防止流体沿转轴泄漏的装置。

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