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This period, the economic and cultural development in the six major areas: First, large-scale long-term Dynasty, greatly promoted the development of agriculture; Second is the backbone of the Jialing River waterway and road construction all over the conduct of a larger scale; Third, Emblem, bands such as the West and establish a state school official, and promote the prosperity of the education and culture; Four Tea-Horse Division is operated by the main tea plantation, Song, the national grasslands and tangutica highly active border trade; Fifth, City flood prevention-oriented care and the dam construction to start large-scale river training works; Sixth, the development and utilization of mineral resources from the project to the scale of all new development.
这一时期，经济文化的发展主要表现在六个方面：一是长期的大规模屯田，大大推动了农业发展；二是以嘉陵江为主干的水路和各地道路建设更大规模地进行着；三是徽、阶、西和等地正式建立起州学，促进了教育文化的繁荣；四是以茶马司经营的茶场为主，宋、金与甘青草原民族的边境贸易高度活跃；五是以防汛护城为主的堤坝修筑和河道治理工程大规模展开；六是矿产开发利用从项目到规模都有新的发展。
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It is unwise to linger overlong on doorsteps in these troubled times .
不过，让我们假设你已经热情地邀请我到你的房间来，在这个麻烦不断的时期，在门阶上逗留太久是不明智的。
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The study of Namurian Flora is not so well advanced because of the limited geographic distribution of the plants in the world, even the stage had been taken place by Serpukhovian and Bashkirian due to the middle borderline between Upper and Lower Carbeniferous passing through the ammonite subzone E2 and subzone H1 of Namurian A, thus there are not so many practical papers subjected to the plants of this stage like the other periods these years.
纳缪尔期植物群的研究工作因受到该期地层分布的局限性而不如其他地史时期植物群研究地深入，甚至由于纳缪尔阶A期菊石E_2与H_1亚带之间的界线亦是上下石炭统的分界线，所以在近年来的《国际地层表》中该阶名也逐渐被塞普霍夫阶和巴斯基尔阶所代替。
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Between 2,500 yr BP and 1,800 yr BP. This was a neo-glacial age with a cold snap. The ice-cap on the King George Island and Ardley Island advanced. Iso -static adjustment lowered the palaeo -first terrace at the edge of Ardley Island under the high tide sea level. This made the rookeries around Y2 lake disappear and Y2 lake changed into a lagoon. The fact of Y2 lake under the sea level was coincident with the radiocarbon age (2180±95 yr BP) of the modern third raised beach terrace with 14m-height above the sea level near Yin ' Ou lake in the Fildes Peninsula.
第二阶段，距今1，800至2，500年，该时期气候骤冷，温度急降，该时期乔治王岛的冰帽有所扩张，同时在阿德雷岛上也出现小规模冰进，由于&地壳均衡&补偿使得该岛边缘古一级阶地处于高潮海平面之下，Y2湖周围的企鹅聚居地消失，该时期 Y2湖沉积表现为泻湖相沉积，与 Y2湖相邻的 Fildes 半岛燕鸥湖边海拔14米的上升海滩的三级阶地14 C 年龄为2180±95yr。
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epoch：世
系(system) 世(epoch)????????统(series) 如显生宙时期形成的地层称为显生宇;古生代时期形成的地层称为古生冥古宙(Hadean Eon) 具有"开天劈地"之意,是地球发展的初期阶 段,目前在地球表面尚未见到或确证这一时期形成的大量岩石,
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Permian system：二叠系
二叠系(permian system)是指二叠纪时期形成的地层. 现国际上和国内均分为上、中、下三个统. 2000年,国际地科联国际地层委员会划分为下统乌拉尔统、中统瓜德鲁普统、和上统乐平统. 德国的二叠系下部为红色砂岩,称为赤底统,包括奥图阶和萨克森阶,
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terrace epoch：阶地时期
terrace edge ==> 阶地外缘 | terrace epoch ==> 阶地时期 | terrace furnace ==> 梯台式炉