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Mentions of boron compounds like borax date back millennia. In 1808, within a week and a half of each other, two research efforts, led by the great chemists Sir Humphrey Davy in London and Joseph Louis Gay-Lussac and Louis-Jacques Thénard in Paris, announced that they had isolated boron.

硼的一种化合物硼砂被提及的年代可以追溯到一百万年前。1808年，在间隔一个半星期的时间内，分别由伦敦的Sir Humphrey Davy以及巴黎的Joseph Louis Gay-Lussac和Louis-Jacques Thénard领导的两项研究成果均声称他们分离出了硼单质。

There are ancient pictures which date back to 6000BC in the city of Catal-Huyuk in present-day Turkey, depicting dogs very similar in type to Greyhounds.

有古老的图片可追溯至公元前六千年在这个城市的催化剂-许于克在现今土耳其，描绘狗十分相似型向狗。

Some of these desks date back to 1819, and atop each desk is a tidy receptacle for inkwells and quills.

有些桌子的年岁甚至可追溯至1819年，在每张桌上有一个用来装墨汁和插羽毛笔的小容器。

Some of these desks date back to 1819, and atop each desk is a tidy receptacle for inkwells and quills.

打开任何一张桌子的抽屉，你会发现那些曾经使用过这桌子的参议员的名字——塔夫脱、朗、史坦尼斯和肯尼迪，这些名字是他们自己亲手刮刻或用笔写上去的。

Stonehenge is a circular setting of large standing stones called megaliths and was probably built between 2500 and 2000 BC though the earth workings of the site date back to about 3100 BC.

巨石阵是由许多巨大且站立的石头排成环状，被称为史前巨石，巨石阵大约是在西元前2500年至2000年建造的，但位址的建立需追朔至西元前3100年。

For this purpose, exhibits may date back as far as the 14th century, as some Indian miniatures do.

要阐述这个问题，我们可以追溯到遥远的14世纪，看看印度人对作画方式的改变。

The progenitor of this class of problems may date back to pre-Greek times.

这类问题的先驱可以追溯到希腊以前的时间。

Selonians preferred to live beneath the surface of the planet, in complex warrens and tunnels that date back to pre-Republic times.

瑟罗尼亚人住在行星地表下，那里都是能够追溯到共和国前时期的拥挤公寓和隧道。

Pictograms date back many years, but they became popular at a time when service industries like aviation, urban planning and public parks had to provide citizens with important and helpful information in a language that was universal.

象形图可以追溯到很多年，但他们变的流行，是因为服务行业如航空，城市规划和公共公园必须以一种通用的语言为公民提供重要和有益的信息。

The origins of the program date back to 1960, when a Pacific White-sided Dolphin was acquired for hydrodynamic studies seeking to improve torpedo performance.

这一计划的根源可追溯至1960年，当时曾找到了一只太平洋短吻海豚进行流体动力学的研究，以期提高鱼雷的性能。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。