1、
It was a cave-like place, and instead of a door, a big stone was rolled in front of the opening.
这个坟墓就象一个洞穴，它没有门，而是滚一块大石头挡在门口。
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2、
causes and preventions of the wear and cave-like corrosion on diesel motor's wet cylinder liner
柴油发动机湿式气缸套磨损穴蚀的原因及预防
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3、
