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For many potential entrée animals this (LION ROAR) is one of the scariest sounds around. Scientists long thought the lion’s distinctive roar was due to thick layers of fat inside the vocal cords. But new research suggests that it's not the fat that makes the roar, it's the shape of the vocal cords themselves.
对于很多猎物来说，狮子的吼声是最可怕的。以前，科学家一直认为与众不同的狮子吼是取决于声带上面的几层很厚的息肉。但是新的研究发现并不是息肉起的作用，而是声带本身的形状。
Most animals have triangular vocal cords. But the lion's mighty pipes are square, tigers’ too. That square shape allows the tissue to withstand more stretching, which lets the big cats create louder roars using lower lung pressure. The finding is the journal Public Library of Science ONE.
大多数动物是三角形声带。但是狮子那根强有力的管道式方形的，老虎也是。这种方形的形状使得组织能够经受住拉伸，这种拉伸使得狮子能够用更大压力产生雷鸣般吼声。这个发现发表在杂志《科学公共图书馆1号》
When we say loud, we mean loud. Lion roars can travel over five miles, and reach up to 114 decibels, which is as loud as a jet airplane taking off. The researchers suggest that the fat is there to cushion the cords, and to provide tissue for repair if the cords get damaged.
我们说话大声，仅仅只是声音很大。狮子吼声可以传到五英里外，达到114分贝，这堪比飞机起飞的情况。研究者发现息肉起一个坐垫的作用垫着声带，同时储备一些组织用于修复，以防声带受到损伤。
Understanding how that repair happens might help doctors fix damaged vocal cords in humans too, which would have to be called a roaring success.
弄清楚这种修复是如何进行的也有助于医生对于人的声带进行修复，这种修复被称为巨大成功。
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