嘉陵江上游诸水在历史时期发生过重大的水系变迁。
The water system of the upper reaches of the Jialing River experienced tremendous changes over the historical period.
宁夏中部风沙区的沙质荒漠化在历史时期，尤其是本世纪50年代以来，具有明显扩展的趋势。
There is an obvious developing tendency of sandy desertification in the blowing sand region of middle Ningxia in historical time, especially since 1950's.
无疑自然因素在历史时期疏勒河流域河湖水系变迁中充当了重要角色，社会因素各个时段的作用却不尽相同。
Undoubtedly natural factors play an important role in water network changes of Shule River Basin in historical period, but the effect of social factors in various periods is different.
除了观赏展品，游客还可以玩电脑模拟游戏，想象自己生活在不同的历史时期，或者漫步在热带雨林中。
As well as looking at exhibits, visitors can play with computer simulations and imagine themselves living at a different time in history or walking through a rainforest.
霍金因罹患卢伽雷氏症而几乎全身瘫痪，无法说话。他在邮件中写道：“我们如今进入了危险与日俱增的历史时期。”
"We are entering an increasingly dangerous period of our history," said Hawking, who has Lou Gehrig's disease, leaving him almost completely paralyzed and unable to speak.
但是除了这些，这是一个挺有意思的故事——在欧洲至关重要的历史时期，描写了一位知名作家不为人知的阴暗面。
But that apart, it is an enjoyable yarn about a famous author's incongruous role in a murky, vitally important period of European history.
电影讲述了在特殊历史时期两个女人彼此坠入爱河的故事，不用说这故事情节肯定得很乱。
Needless to say this movie has lots of controversy but also tells a story about two women falling in love during a very hard historical time period.
但是，在某一小段时间历史时期内——即过去的几千年——植被分布的变化比以前要快得多。
But in just a tiny sliver of its history - the last few thousand years - the patterns of vegetation altered much faster than before.
在人类的大部分历史时期，人们在不适合耕种的土地上放牧牛羊，这样它们就把不能食用的草转变成了肉和奶。
For most of human history, cattle, sheep and goats grazed on land that wasn't suitable for ploughing, and in doing so they converted inedible grass into edible meat and milk.
城市空间结构的演变是一个漫长的过程，在不同的历史时期，其形态结构具有明显的区别。
The evolution of urban spatial structure is a long process, and its Structure have obvious difference in different historical periods.
在特定的历史时期，其地位和作用甚至超过了法典。
In a particular historical period, its status and role even more than the code.
儒学作为中国传统思想和文化的主体部分，在各个历史时期呈现不同的表现方式。
As a primary part of Chinese traditional thought and culture, Confucianism indicates different forms in every historical period.
在不同的历史时期，城市的性质、功能不同，城市规划也有相应的变化。
In different historical periods, under the difference nature and functions of the city, urban planning is also changing correspondingly.
这是党史工作者在新的历史时期应着力思考的重要课题。
This is party history worker answer in new historical period the main task that exert oneself ponders over.
虽然长寿的可能性已经明显加大了，但是在绝大多数有记载的历史时期内，自然界赋予人类的寿命并没有多大变化。
Though the probability of living to old age has risen sharply, the individual human lifespan set by nature has remained much the same through most of recorded history.
这本书讲述了一个家庭在特殊历史时期通过特殊方式生存下来的故事。
This is a story of a family that functioned in a particular way in a particular time.
中国佛教是在近代科学主义流行的历史时期步入复兴之路的。
Chinese Buddhism assumed its new vitality during the historical period when modern scientism became popular.
他们看到了各种各样的恐龙，了解了它们之间的区别，也知道了这些生物在地球上出现的历史时期。
They learn about the differences between all kinds of dinosaurs and the different eras these creatures roamed to earth.
国家安全观是一个动态的概念，在不同历史时期有着不同的内涵和标准。
National Security is a dynamic concept, which referred to the different connotations and standards in different periods.
中国是世界上人口最多的国家，劳动力资源丰富的优势在特定的历史时期变成了沉重的负担。
As a country with the largest population in the world, the advantage of abundant labor force has became a heavy burden to China.
国家非常高效也善于渗透。我想中国在许多其他历史时期也都是一样的，包括君主政体。
Yes, the state is effective and it penetrates. But I suspect the state in China also penetrated during most of the different historical eras and systems, including monarchy.
在不同的历史时期，研究对象和研究方法有所不同。
In different historical periods, the object of study and method of study vary.
在不同的历史时期，研究对象和研究方法有所不同。
In different historical periods, the object of study and method of study vary.
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