The poor stood there, with his hands crossed, his eyes fixed on the dark cave.

那个穷人站在那里，双手交叉，眼睛盯着黑黑的洞穴。

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I am sure that, without modern weapons, I would make a very poor show of disputing the ownership of a cave with a bear.

我断定，如果我在没有现代武器的情况下同一只熊争夺一个山洞，我会出丑的。

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Cave and cleft in karst limestone are the main oil-bearing space of Ordovician oil poor in Tahe oil field, the develop level of ancient karst controlled the formation oil pool in Ordovician reservoir.

塔河油田奥陶系油藏储集空间以碳酸盐岩岩溶孔洞缝为主，古岩溶发育程度对奥陶系油气成藏有重要的控制作用。

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