That's according to a new study by David Smith and colleagues from the University of Aberdeen in the UK.
这是从英国阿伯丁大学的大卫·史密斯和他的同事们的一项新研究得来的。
"The new device can cloak a much wider spectrum of waves--nearly limitless," senior researcher David R. Smith said in a statement.
资深研究员戴维·R.史密斯在一份声明中说：“新装置能够遮挡范围更广的光波——接近于无限。”
For anyone wanting a painless primer in the ideas of Adam Smith, David Ricardo or more recent economists, such as Paul Samuelson, this is the place to find it.
对于所有希望不费周折便能对亚当史密斯，大卫里卡多，以及时代稍近的经济学家诸如保尔萨姆尔森的理念有所了解的话，此书乃是理想之选。
Some were friends of Enlightenment philosophers such as David Hume, Adam Smith, Adam Ferguson and other figures.
有些人交游广泛，和启蒙运动的哲学家戴维德·休谟、亚当·史密斯、亚当·弗格森和其他大人物相交匪浅。
“I’M NOT a banker,” says David Smith, chief executive of Jaguar Land Rover (JLR).
“我可不是银行家，”捷豹陆虎首席执行官大卫史密斯说道。
Lead researcher Dr David Smith concludes: "Our findings demonstrate that women's memory is enhanced by lower pitch male voices, compared with the less attractive raised pitch male voices."
负责该研究的大卫·史密斯总结说：“我们的发现证明，与男高音相比，男低音更能让女性记忆深刻。”
Measuring just 1/8th of an inch by 1/4 of an inch, this is the world's smallest working train model by David Smith Photo: BARCROFT
大卫·史密斯的世界上最小火车模型，仅有1/8英寸*1/4英寸大小（约合3.2毫米*6.4毫米）。
David Smith of Michigan wrote, What is the easiest way to find the Andromeda galaxy at this time of year?
密歇根州的大卫·史密斯写到：一年中这个时候最容易找到仙女做的方法是什么呢？
Mr. Smith: Good morning. I'm David Smith from Fashion & Health Textiles Import and Export Corporation of Liverpool. Here's my card.
史密斯先生：早上好。我是利物浦时尚健康纺织品进出口公司的大卫·史密斯，这是我的名片。
David Smith of North London has a pot-bellied pig Connie.
伦敦北部的戴维·史密斯养了一头叫做康妮的大肚猪。
Sony Pictures Imageworks' David Smith pointed out that computer generated locations can also be more realistic to actors.
史密斯说，对演员来说，电脑创造的场景也能显得更有形、更真实。
I'll remind myself of that. After those, David Smith will open with a few minutes' explanation.
我会记得的。之后，戴维·史密斯会先做几分钟的说明。
David Smith, care of Mary Jones, 16, High Street.
高街16号玛丽琼斯转交戴维史密斯。
His great sparring partner was his friend and fellow Scot, David Hume, who taught Smith many of his best punches.
斯密最重要的搭档是他的挚友，苏格兰哲学家大卫·休姆，他把自己的许多秘笈传授给了斯密。
David Kirsch is an associate professor at the Robert H. Smith School of Business at the University of Maryland.
大卫·科什是马里兰大学罗伯特h。史密斯商学院的副教授。
I'll remind myself of that. After those, David Smith will open with a few minutes explanation.
我会记得的。之后，戴维·史密斯会先做几分钟的说明。
"It dies on its output," said David I. Smith, a director of technology assessment at Mayo Clinic.
“它在它的输出死，”戴维说一，史密斯是在梅奥诊所进行评估的技术总监。
And, reports David Smith, climate change is blamed for playing havoc with harvests and the seasons.
同时，气候变化使得该国的收成减少，四季气候陷入混乱。大卫·史密斯报道。
Professor Sir David King is director of the Smith School for Enterprise and the Environment at the University of Oxford.
大卫•金教授，牛津大学史密斯企业与环境学院院长。
Professor Sir David King is director of the Smith School for Enterprise and the Environment at the University of Oxford.
大卫•金教授，牛津大学史密斯企业与环境学院院长。
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