沙地的

There are several factors that can increase the chances of your tortoise getting RNS - dusty conditions, foreign bodies lodging in the nostrils, inappropriate humidity or temperature, lack of sunlight and the accompanying dampness, confinement in damp grassed areas with no access to sand, overcrowding, malnutrition, stress, and a deficiency of vitamin A.

有些因素会增加患RNS的几率：充满灰尘的环境，鼻孔处的外来寄生物，不合适的温度或湿度，缺乏日晒和相应的潮气，关在潮湿的草丛里，不能接触到沙地，过渡拥挤的环境，营养失调，过分紧张，缺乏维生素A。

The analyses of social and economic development indicate that, up to 1998, the total population in Yijinholo County is 143, 949 persons, the population density is 24 persons per square kilometer, large population number results in land exploitation for food and overgrazing in rangeland. The change in temporal and spatial pattern of landuse from 1977 to 1998 demonstrates that mobile sand dunes was replaced by rangeland and woodland and partial shrubland in the middle of study area changed into rangeland and farmland from 1977 to 1987, while mobile sand dunes and rangeland transformed into shrubland and farmland in a small parts from 1987 to 1998, the above-mentioned change is proved by the change of fractal dimension index and fragmentation index at landscape and its element levels.

对近50年来伊旗社会经济发展的分析结果表明，虽然人口增长率基本上呈下降趋势，但由于人口基数较大，截至1998年底，伊金霍洛旗的人口总数达143949人，人口密度为24人／平方公里，较高的人口密度带来了更多的生存需求，使得大量的草牧场被开垦，而剩余的则严重超载。1977-1998年间伊土地利用结构总体格局变化的分析结果表明，1977-1987时段内主要是流动沙地为草牧场和乔木林地所取代，伴随着中部的部分灌木林地转换为草牧场和农地：而1987-1998时段内主要是草牧场和流沙地为灌木林地和农地特别是灌木林地所取代，而景观及各景观要素的分维度指数和破碎度指数的变化也充分证实了这一结论，虽然在前10年（1977-1987年）中大面积的灌木林被砍伐，但土地利用格局的整体变化间接地反映出该时段内荒漠化的状况正在发生逆转。

When the flowing mass reaches the drain at the foot of the bank it spreads out flatter into strands, the separate streams losing their semi-cylindrical form and gradually becoming more flat and broad,running together as they are more moist, till they form an almost flat sand, still variously and beautifully shaded, but in which you can trace the original forms of vegetation; till at length, in the water itself, they are converted into banks, like those formed off the mouths of rivers, and the forms of vegetation are lost in the ripple marks on the bottom.

当那流质到了路基脚下的排水沟里，它就平摊开来而成为浅滩，各种溪流已失去了它们的半圆柱形，越来越平坦而广阔了，如果更湿润一点，它们就更加混和在一起，直到它们形成了一个几乎完全平坦的沙地，却依旧有千变万化的、美丽的色调，其中你还能看出原来的植物形态；直到后来，到了水里，变成了沙岸，像一些河口上所见的那样，这时才失去植物的形态，而变为沟底的粼粼波纹。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。