在拉丁美洲加勒比海的东南端,有一个叫巴哥的小岛,岛上有一个小湖。与一般的湖泊不同的是,这个湖表面平坦,上面却覆盖(fùɡài)着一层硬化了的沥青。原来啊,由于地壳运动,岩层破裂,地下石油和天然气涌出来,并通过裂隙,冲进死火山口,满溢成湖。最后,油气挥发,残渣(cán zhā)成为沥青。这个以盛产黑乎乎的天然沥青闻名于世的 At the southeastern tip of the Latin American Caribbean, there is a small island called Tobago with a small lake on the island. The difference is that with the general lake, the lake surface is flat, but covered with a layer of hardened asphalt. The original ah, due to crustal movement, rock burst, underground oil and gas gushed out through the cracks, rushed into the crater, overflow into the lake. Finally, the volatile oil and gas, the residue into a bitumen. This is famous for its rich black natural pitch