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So geochemist Robert Hazen of the Carnegie Institution of Washington in Washington, D.C., and colleagues traced the origins of nearly 3000 common terrestrial minerals--such as turquoise , azurite , and malachite --to about a dozen ancient minerals.

因此，华盛顿哥伦比亚特区华盛顿卡内基研究院的地球化学家罗伯特·黑曾及同事探索了将近3000种地球上普通矿物的起源，其中包括绿松石、蓝铜矿和孔雀石，这些矿物可以追溯到大约十二种古代的矿石。

So geochemist Robert Hazen of the Carnegie Institution of Washington in Washington, D.C., and colleagues traced the origins of nearly 3000 common terrestrial minerals--such as turquoise, azurite, and malachite--to about a dozen ancient minerals.

因此，华盛顿特区华盛顿卡内基研究所的地球化学家Robert Hazen和他的同事们，对近3000种常见的地球矿物质――例如绿松石、蓝铜矿、碱式碳酸铜――进行追本逐源，发现它们源于十几种古代的矿物质。

In the process of contour tracing, contour lines are gained by tracing in anticlockwise order and a method of backdate search which ensures the correctness of the algorithm is used for contour tracing at those pixels where other contour pixels can not be continuously traced. By analysis of the neighbouring pixels, this paper avoids judging those pixels that no need to be compared again.

提出了一种逆时针追踪轮廓线的彩色图像区域分割算法，其思想是按逆时针顺序追踪轮廓线，在追踪过程中避免了像素点的重复判断，采用回溯搜索解决奇点问题，从而保证了追踪过程的连续性和正确性。

An algorithm for color image segmentation based on contourtracing in anticlockwise order is presented. In the process of contour tracing, contour lines are gained by tracing in anticlockwise order and a method of backdate search which ensures the correctness of the algorithm is used for contour tracing at those pixels where other contour pixels can not be continuously traced.

提出了一种逆时针追踪轮廓线的彩色图像区域分割算法，其思想是按逆时针顺序追踪轮廓线，在追踪过程中避免了像素点的重复判断，采用回溯搜索解决奇点问题，从而保证了追踪过程的连续性和正确性。

ASEM, initiated from the Bankok summit meeting in 1996, however the cooperation between EU and ASEAN can be traced to 1970,and at that time, their cooperation was only limited in the trade level.

中文摘要亚欧会议始於1996年的曼谷高峰会，而欧盟与东协的合作最早始於1970年，当时双方的合作仅在贸易层次。

While contemporary badminton first appeared in the mid-19th century, it evolved from the game battledore and shuttlecock, which can be traced back to ancient Greece, China, Japan and India.

现代羽毛球运动在19世纪中叶首次出现，它是由一种名为"毽子板球"的运动发展演化而来的。"毽子板球"的起源可以追溯到古希腊、中国、日本和印度。

While contemporary badminton first appeared in the mid-19th century, it evolved from the game battledore and shuttlecock, which can be traced back to ancient GRE ece, China, Japan and India.

现代羽毛球运动在19世纪中叶首次出现，它是由一种名为"毽子板球"的运动发展演化而来的。

The most famous in Germany's rural Bavarian beer, there is the history of beer is almost as old as the history can be traced back to ancient Roman times BC.

在德国最着名的啤酒之乡巴伐利亚，啤酒存在的历史几乎和当地的历史一样悠久，可以追溯到公元前的古罗马时代。

This may be traced to the conditions of his age.

这可能要追溯到他的年龄条件。

The company's first digital business card printing and membership card equipment can be traced back to the?

该公司的第一台数码制卡和会员卡制作设备可以追溯到什么时候呢？

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。