没有人确切地了解现在还有多少武装分子游荡、隐匿在河谷水涧。
据开普敦大学的弗兰克·埃克哈德讲，2010年任何一条河谷内的水都不太正常，更有观察家认为博泰蒂河是一条死河。
According to Frank Eckhardt of the University of Cape Town, the presence of any water in the river valley had become unusual by 2010, and some observers thought the Boteti was a dead river.
如果洪水发生在河谷但不是下游，那么水在某种程度上是被起伏的河底阻挡住而涌回来。
If it occurs in this river valley but not downstream, then the water is being held back in some way by a heaving river bottom.
本文按岩溶地区水动力条件，将岩溶河谷分为补给型、排泄型两种类型。
On the basis of water dynamic conditions in karst regions, karst valley is divided into two types: the supplying type and draining type.
在湋水河谷多个地点发现全新世古洪水平流沉积层赋存于黄土—古土壤剖面中。
During the investigation of the Weishui River valley, we found many palaeoflood slack-water deposits sandwiched in Holocene loess-soil profiles.
本文首先采用灰色系统评价方法、空气污染综合指数等方法对中国西部河谷型城市大气、地表水、噪声环境质量进行了客观评价。
The grey system assessment method, air pollution integrated index are applied to evaluate the atmosphere, surface water, noise environmental quality of valley cities in western China.
傣族居住在热带、亚热带河谷平坝地区，他们生活的环境，从山到水，从水到田，到处是一片绿色。
Dai nationality live in the tropical and subtropical flat areas, the environment of their life is green everywhere, from mountain to water, from water to field.
车出西宁，一路沿湟水河谷前进。
这里视野很开阔，全部湟水河谷的庄稼、村落和自然环境都展现在他们眼前。
One's field of vision was very wide here; the natural scenery, villages and fields of the whole Huangshui River valley spread out before them.
河谷里的小溪满载着浑浊的泥水奔流而去，但那些小水洼和小水坑里的水已渗入地下，都不见了踪影。
The creek in the gully runs bank—full of brown water, but the small lakes and puddles are already disappearing into the earth.
河谷里的小溪满载着浑浊的泥水奔流而去，但那些小水洼和小水坑里的水已渗入地下，都不见了踪影。
The creek in the gully runs bank—full of brown water, but the small lakes and puddles are already disappearing into the earth.
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