1·Echolocation is pretty self-explanatory; using echoes reflected by sound waves to locate things.
回声定位是比较不解自明的；利用声波反射的回声来定位物体。
2·He tried it; but in the darkness the distant echoes sounded so hideously that he tried it no more.
他试过，但是在黑暗中，远处的回声听起来是那么可怕，所以他不再去试它了。
3·So, the echoes from a tree are going to a mass of chaotic acoustic reflections, not like the echo from a moth.
所以，树的回声会是一团混乱的声波反射，而不像飞蛾的回声那样。
4·In this process of transmission and reflection, the sounds are changed, and the changes in the echoes enable the bat to perceive features of the target.
在这个传递和反射的过程中，声音发生了变化，回声的变化使蝙蝠能够感知到目标的特征。
5·Anyway, as I were saying, by analyzing these echoes, the bat can determine, say, if there is wall in a cave that it needs to avoid, and how far away it is.
总之，就像我刚才讲的，通过分析这些回声，蝙蝠可以确定，比如说，洞穴里是否有需要避开的墙壁，以及它的距离有多远。
1·This picture echoes an old Chinese poem: Sharp edge of a sword comes out from grinding, and plum blossom's fragrance comes from the bitter cold.
这张照片和一首中国古诗产生了共鸣：宝剑锋从磨砺出，梅花香自苦寒来。
2·But there are echoes too of the difficulties the US and its Allies face now.
但是现在在美国跟他的同盟国所面对的困难上也有一些共鸣。
3·This time Mr Humala's pitch is more moderate, with echoes of Lula.
这次，乌玛拉先生的姿态要温和得多，而且得到了鲁拉的共鸣。
4·The award is as much recognition of that ground-breaking quartet as of the new book, which has so many echoes of its forerunners.
这部最新作品所获的殊荣实际上也就是对他四部小说的成就给予了同样的肯定，因为它与作家的前三部小说有着如此之多的共鸣。
5·Mother Teresa had it right when she said, "Kind words can be short and easy to speak, but their echoes are truly endless."
特雷莎修女赋予言语权利当她说道：“和蔼的话语可能是简短和易于表达，但是它们引发的共鸣却是无止境的。”