"We had to find a rock that had just enough iron to record a magnetic signature, but not so much that it would be affected by later chemical changes," Tarduno says.

“我们必须找到一块岩石，它含铁量恰恰好能够用来记录磁信号，却又不至于多到后来受到化学变化的影响”，塔都诺说。

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They established this signature thanks to rock samples brought back to Earth by Apollo 17 astronauts in 1972 and images of the area around the mission's landing site by the Hubble space telescope.

而他们能确定钛矿的位置标记却要归功于在1972年阿波罗17号宇航员带回地球的岩石样本和通过哈伯望远镜观测到的围绕任务着陆点的地区图像。

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The black rectangular jagged sequin bandeau maxi dress epitomises festive party-wear mixed with Kate's signature rock-n-roll style.

黑色的、长方形的、锯齿状的、金片、管状的马克西裙装带来节日的缩影，搭配凯特的签名更显出摇滚的风格。

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While it marks a return to his blues roots, it also contains the band's signature rock and roll sound on tracks like "Rock Me Baby."

VOA: standard.2010.06.27

Try her signature Rock, Pebble, Chocolate, warm and cool truffles, bon bons and almond cream that looks like the name implies and tastes just great!

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Mr. McAuliffe grandly unveiled his signature MyCar last July at a rock-star event attended by Messrs.

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Many of his signature dishes, most famously his rock shrimp tempura and miso black cod, have been widely ripped-off by other restaurants, but remain at the top of their class.

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