39.High School English Listening

Most flies don't havethe ability to hear.
Certain parasitic flies have a hearing system that is so exact inpinpointing a sound's origin that it rivals the exceptional ears of owls and cats.
This fly's superb hearing surprised scientists because its tiny body is too small to use the same kindof hearing system that larger animals use.
And yet they discovered that the fly was using its hearing to locate the chirps of crickets in order to then deposit parasitic larvae onto the crickets'bodies.
What they found was unlike any other known ear structure, this fly's eardrums are connected bya bridge of stiff material.
Vibrations that travel between the two eardrums enable the fly to pinpointthe origin of a sound as accurately as any other sound system we know of.
And what's more, this fly's exceptional hearing system is influencing microphone and hearing aidtechnology.
For instance, it could lead to hearing aids that hide within a person's ear canal and yetare able to gather sound primarily from the direction the listener is facing.
译文：
大多数苍蝇没有听觉能力。
某些寄生蝇有一个听觉系统，能准确地指出声音的来源，可以与猫头鹰和猫的特殊耳朵相媲美。
这种苍蝇的超强听力让科学家们感到惊讶，因为它的身体太小，无法使用大型动物使用的那种听力系统。
然而他们发现，这种苍蝇利用其听觉来定位蟋蟀的鸣叫声，以便将寄生的幼虫放在蟋蟀的身上。
他们发现，与其他任何已知的耳朵结构不同，这种苍蝇的耳膜是由坚硬的材料组成的桥梁连接的。
在两个耳膜之间传播的振动使这种苍蝇能够像我们所知的任何其他声音系统一样准确地指出声音的来源。
更重要的是，这种苍蝇的特殊听觉系统正在影响着麦克风和助听器的技术。
例如，它可能导致助听器隐藏在一个人的耳道内，但却能主要从听者所面对的方向收集声音。
重点词汇：
hearing system 审讯制
in order to 为了 ; 以便 ; 目的在于 ; 要想……
any other 其他的 ; 任何其他的 ; 其他任何一个
ear structure 穗结构
sound system 音响系统
know of 知道；听说