What else might the engineer think of?
意译：工程师们还可能想到什么？
直译：什么其他的可能是工程师会想到的？

Well, blind humans sometimes seem to have an uncanny sense of obstacles in their path.
意译：嗯，盲人好像对路上的障碍有着不可思议的直觉
直译：嗯，盲人有时好像有一种不寻常的感觉，对于障碍在他们的道路
生词：uncanny 神秘的，不同寻常的 obstacle障碍
补充:a sense of …的感觉

It has been given the name 'facial vision', because blind people have reported that it feels a bit like the sense of touch,on the face.
意译：这被叫做“面感视觉”，因为据盲人说感觉到有障碍物的时候就像脸部被触摸一样。
直译：
词语：report 据说，据传
句型：because 引导原因状语从句（时间上无联系，例：I feel so tired now ,because I stayed up last night.）

One report tells of a totally blind boy who could ride his tricycle at good speed round the block near his home, using facial vision.
意译：一则报道称一位完全失明的男孩能凭借面感视觉绕着附近街区快速骑三轮车。
直译：一则报道称一个完全使命的男孩，能够绕着他家附近的街区骑着他的三轮车
单词：tricycle 三轮车 good speed 较快的速度
句型：who引导的同位语从句，详细解释这个男孩做了什么

Experiments showed that, in fact, facial vision is nothing to do with touch or the front of the face, although the sensation may be referred to the front of the face, like the referred pain in a phantom limb.
意译：实验表明面感视觉实际上与“感”和“面”没有任何关系，尽管这种感觉可能被认为源自面部正前方，正如幻肢中的牵涉性痛感一样。
直译：实验表明，事实上，面感视觉对于接触或者面前没有任何关系，尽管这种感觉可能被认为在面部前面，像痛被归入幻肢。
词语：sensation感觉 refer to 认为 phantom limb幻肢
句型：that 指代上文的现象

The sensation of facial vision, it turns out, really goes in through the ears.
意义：事实是，面感视觉是通过耳朵传输的。
直译：面感视觉，结果是，真的通过耳朵。
句型：

Blind people, without even being aware of the fact, are actually using echoes of their own footsteps and of other sounds, to sense the presence of obstacles.

Before this was discovered, engineers had already built instruments to exploit the principle, for example to measure the depth of the sea under a ship.

After this technique had been invented, it was only a matter of time before weapons designers adapted it for the detection of submarines.

Both sides in the Second World War relied heavily on these devices, under such codenames as Asdic (British) and Sonar (American), as well as Radar (American) or RDF (British), which uses radio echoes rather than sound echoes.