Unlike the etch a Sketch, their technique did not involve scraping.
与蚀刻素描不同的是，他们的技术不需要刮擦。
But what they offer in clarity and readability, they lack in contrast: Their look is decidedly gray, like an etch a Sketch.
但是他们所提供的是清晰度和可读性，对比度则乏善可陈：其效果相当灰暗，就像蚀刻素描。
Not so with the nanoelectric Etch A Sketch, which can selectively erase the conducting lines it creates by applying negative voltage.
纳米电子蚀刻素描可以通过施加负电压，对画好的线路进行选择性清除。 他们的成果刊登在去年出版的《科学》杂志上。
它像不像一个蚀刻素描？
Despite its fame, the Rubik's Cube has yet to be inducted into the National Toy Hall of fame, where other classic playthings such as the Slinky and the Etch-a-Sketch are enthroned.
尽管魔方声名远播，但它尚未入选美国国家玩具名人堂，而其他经典玩具如机灵鬼弹簧和神奇画板都已榜上有名。
Despite its fame, the Rubik's Cube has yet to be inducted into the National Toy Hall of fame, where other classic playthings such as the Slinky and the Etch-a-Sketch are enthroned.
尽管魔方声名远播，但它尚未入选美国国家玩具名人堂，而其他经典玩具如机灵鬼弹簧和神奇画板都已榜上有名。
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