In 1987 when Discovery Channel's now-famous Shark Week series debuted, researchers had few means of studying the animals beyond underwater cages and crude acoustic tracking devices.

当1987年《探索》频道第一次播出著名的《鲨鱼周》系列时，研究人员还在使用防鲨笼和简陋的声音追踪设备。

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It is not a practical grammar by any means-when building an acoustic model from grammars as small as this, you soon run into problems regarding insufficient samples.

无论如何它不是一个实际的文法—通过这么小的文法构建语音模型时，您很快就会遇到样例不够的问题。

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They should have used other means to shake off the pirates, like a loud acoustic device.

他们本可以利用其它方式撵走海盗，比如使用强声装置。

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Still, using one acoustic source means that the devices can be made cheaper still.

ECONOMIST: Acoustic microfluidics

That means that all content can be brought in, from some kid playing acoustic originals in her bedroom to long time music streaming holdouts like The Beatles and Led Zeppelin.

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Unfortunately, Sony's screen was of the acoustic type, which allows sound through from the cinema's speakers behind, and which means our close-up images are riven with tiny holes.

ENGADGET: This is what native 4K home cinema looks like on Sony's VPL-VW1000ES projector