20世纪60年代和90年代后期存在着有趣的相似之处。
There are interesting parallels between the 1960s and the late 1990s.
在该世纪后期，科学家和技术人员开始研究烟花的实际用途，比如利用烟花帮助水手确定他们在海上的位置。
Later in the century scientists and technicians started to look at the practical purposes for which fireworks might be employed, such as using rockets to help sailors establish their position at sea.
事实上，18世纪后期欧洲人抵达之时，土著人还在练习掌握这种艺术形式，某些图像显示了他们之间的联系。
In fact, the Aborigines were still practising this art form in the late 18th century, when the Europeans began to arrive, and certain images point to the contact between them.
这些学者认为，即使在十九世纪后期，随着政府在经济中的作用大大减弱，自由放任政策也没有完全取得胜利。
These scholars argue that even in the late nineteenth century, with the government's role in the economy considerably diminished, laissez-faire had not triumphed completely.
在19世纪后期，生态学从它的自然历史和植物地理学的根源开始发展为一门独立的科学。
In the late nineteenth century, ecology began to grow into an independent science from its roots in natural history and plant geography.
在20世纪后期，考古学家发现了一个复杂民族的遗迹，他们的居住地可能是一个鲜为人知的文明中心。
In the late twentieth century, archaeologists discovered the remains of a sophisticated people whose settlement might have been the hub of a civilization few people even thought existed.
在20世纪后期，地质学家和海洋学家在研究海洋沉积物时发现了能够证明海洋变暖和变冷的化石，并修正了这一观点。
This idea was modified in the late twentieth century, when geologists and oceanographers examining oceanic sediment found fossil evidence of warming and cooling of the oceans.
直到20世纪后期，评论家们才意识到她所做的事情的力量。
It wasn't until fairly late in the century that critics recognized the power of what she did.
电影业从“默片”向其他方向的转变始于上世纪20年代后期。
The shift of the industry away from 'silent' films began during the late 1920s.
他在19世纪50年代后期力促奴隶贸易的复兴，并提出了一种他称之为担保主义的理论。
He urged the revival of the slave-trade in the late 1850s, and he developed a theory of what he called warranteeism.
13世纪后期，意大利的玻璃制造商发现了成本更低廉的替代方案。
Late in the 13th century, glass makers in Italy came up with a less expensive alternative.
这些窗户可能是中世纪后期精制而成。
The windows would probably have been crafted in the latter part of the Middle Ages.
19世纪中后期的现实主义和自然主义画家都非常关注摄影——把它当作一种可以使用、可以向其学习和作出反应的东西。
The realistic and naturalistic painters of the mid- and late-nineteenth century were all intently aware of photography—as a thing to use, to learn from, and react to.
随后，在16世纪后期，荷兰的食物科学家培育出了又大又直又甜的红色胡萝卜，与我们今天吃的胡萝卜类似。
Then, in the late 1500s, food scientists in the Netherlands cultivated large, straight, sweet, red carrots like the ones we eat today.
然而，在20世纪80年代后期，一些科学家在美国西部的内华达探索魔鬼洞，这基本上是一个广阔的充满水的洞穴，并且远离海洋。
However, in the late 1980s, some scientists were exploring Devil' s Hole, which is basically an extensive water-filled cave, far from the ocean, in Nevada2, in the western United States.
在中世纪后期，人们习惯用磨料刮去羊皮纸的表面，把纸上的所有文字都擦得干干净净。
In the late Middle Ages, it was customary to scrape away the surface of the parchment with an abrasive, which completely wiped out any writing that was there.
肥皂在19世纪后期成为人们的最爱。
特别是，他们写道，外部强迫‘可以把它归功于温室气体的压迫’，自17世纪后期以来，观测的冬季变暖最佳猜测是75%，这该由温室气体负责。
In particular, they write, external forcing "largely attributable to greenhouse-gas forcing" is responsible for "a best guess of 75 percent of the observed winter warming since the late 17th Century."
他测量和比较了20世纪殖民后期美洲、非洲和欧洲血统的不同人群的头盖骨，发现我们的大脑尺寸再次出现增大的趋势。
He measured and compared the craniums of Americans of African and European descent from late colonial times to the 20th century and found that our brain size is on the move again.
菲律宾在16世纪后期由新西班牙（墨西哥）统治。
The Philippines was ruled from New Spain-(Mexico) in the late 16th century.
接着，海平面重新保持稳定，或者有些许回落，直至19世纪后期开始，海平面又接着上升。
Sea level then held steady, or slightly fell, until the late 19th century, when the current sea level spike began.
在二十世纪后期，很多学校和大学都出现了用更加多样化的阅读材料来代替经典作品的风潮。
In the late twentieth century, there was a move to replace classic literature used in most schools and universities with a more diverse reading list.
在十九世纪后期，她周游世界各地，了解外国文化，增进自己的艺术修养。
During the late nineteenth century, she traveled around the world to learn about foreign cultures and improve her knowledge of art.
在十九世纪后期，美国还就当时几个国际争议问题派出代表进行斡旋，其中之一是英国与委内瑞拉之间的争端。
The United States also offered to serve as a negotiator in several international disputes during the late eighteen hundreds. One dispute involved Britain and Venezuela.
但到18世纪后期，一些南方奴隶主开始有怀疑。
By the late eighteenth century, however, some southern slaveholders began to have doubts.
19世纪后期上海出现的石库门，是最具上海特色的居民住宅。
Shikumen (literally"stone gate") is an architectural style that first appeared in late nineteenth century. Shikumen-style buildings are characteristic residential buildings of Shanghai.
上世纪70年代后期，有兄弟俩花费了一些时间来研究学习的本质。
In the late 1970s two brothers spent some time exploring the nature of learning.
上世纪70年代后期，有兄弟俩花费了一些时间来研究学习的本质。
In the late 1970s two brothers spent some time exploring the nature of learning.
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