river valleys是什么意思

Dr Hynek said: 'The abundance of these river valleys required a significant amount of precipitation. '

海尼克博士说：“如此大量河流峡谷的形成需要极为充沛的雨量”。

"No one expected Venus to be the poisonous hell that it is, or Mars to have the river valleys that it does, " he said.

“在我们进行宇宙探索之前，没有人能够预料到，金星是那样一个充满毒气的地狱，而火星表面却有河谷。”他说。

The discovery is based on a detailed study of the dried-up river deltas and thousands of river valleys that scatter the Martian surface.

这一发现是基于对遍布火星表面的干涸的三角洲和成千上万的河流峡谷的详细研究。

In the south, the Shiwalik Hills are covered with dense forests, lowland river valleys, and mountains up to around 1, 500 m above sea level.

南部的Shiwalik山区有茂密的森林、低地的河谷，每座山的海拔都在1500米之上。

As heavy rain continues pounding the river valleys, the water level is still rising.

随着强降雨持续涌入河谷，四川地区河流水位仍在上升。

Programs for comprehensive management of the Tarim and Heihe river valleys were launched.

塔里木河和黑河经综合治理，挽救了濒临崩溃的下游生态环境。

Pollution prevention and treatment should be intensified in key river valleys and key land and sea areas.

加强重点流域、区域、海域污染防治和城市环境综合整治。

National standards would have stricter limits for discharge of pollutants in key river valleys.

提高重点流域水污染物的国家排放标准。

The runners cover long distances on foot across isolated river valleys and snow-covered mountain passes.

邮递员经常徒步长途穿越与世隔绝的河谷和大雪覆盖的山路。

The geomorphology of river valleys in the Gyaca region has controlled by tectonic movement and climate.

该段河谷地貌的形成演化受构造运动和气候等影响。

The authority rates all but three of the basin's 23 river valleys as being in a poor ecological state.

专家评估认为，除了三个河谷之外，这23个河谷都处于一种脆弱的生态状况下。

They will tend to be located in the mountains, forests, river valleys or around lakes.

这类地区多为山地、森林、河谷或湖泊地带。

Continuous attention will be paid to the pollution control in key river valleys, regions and sea areas.

继续抓好重点流域、区域、海域的污染治理。

Uzbekistan is a dry, doubly landlocked country in Central Asia, of which 10% consists of intensely cultivated, irrigated river valleys.

乌兹别克斯坦位于中亚，是一个干旱的双重内陆国家，10%的地区有密集的耕地、水渠和山谷。

With continuous hills and deep river valleys, its topography changes greatly and the drop of river is high.

该类地区群山连绵，河谷深切，地形起伏大，河流落差大；

These bands wintered separately in sheltered river valleys.

这伙人在藏身的河谷分散居住，度过冬天。

Pollution prevention work started full swing in key river valleys and regions.

重点流域和区域污染防治工作全面展开。

Nearby river valleys, flood plains, and salt lakes appear in tones of beige and brown.

河谷附近的冲击平原、盐湖里满眼的黄色、棕色。

Sunny slopes in mixed forests, thickets, river valleys, grasslands; 1200--2500 m. Gansu, Hebei, Nei Mongol, Shaanxi, Shanxi [Korea].

在混交林，灌丛，河流域，草地里的阳坡；1200-2500米甘肃，河北，内蒙古，陕西，山西[朝鲜]。

Grassy areas in mountain valleys, gravelly places in river valleys; 1200-1900 m. Xinjiang [Kazakhstan, Kyrgyzstan, Russia].

在山谷，在河流域的砾石堆里的长满草的地区；1200-1900米新疆[哈萨克斯坦，吉尔吉斯斯坦，俄罗斯]。

The central government provided financial support for 691 projects to prevent and control water pollution in major river valleys.

中央政府投资支持重点流域水污染防治项目691个。

Slopes, mixed forests, thickets of river valleys; 1100--3900 m. SW Sichuan, S Xizang, Yunnan [Bhutan, India, Kashmir, Nepal, Sikkim].

山坡，混交林，河流域的灌丛；1100-3900米四川西南部，西藏南部，云南[不丹，印度，克什米尔，尼泊尔，锡金]。

Coniferous and Quercus forests in river valleys, thickets on slopes; ca. 2300 m. SW Sichuan, NW Yunnan.

具球果和在河的栎木林流域，山坡灌丛；约2300米。四川西南部，云南西北部。

Deep bays and sounds, in the shape of river valleys, cut inland on the coasts.

深海湾和海峡，呈河谷的形状，在岸边切割内陆。

cypress of river valleys of Mexican highlands.

墨西哥高地河谷的一种杉树。

Forest margins, meadows, river valleys, ditch banks; 1000--2200 m. Xinjiang [Mongolia, Russia; E Europe].

林缘，草甸，河流域，沟岸；1000-2200米新疆[蒙古，俄罗斯；欧洲东部]。

I live on plains and deserts and in tropical rain forests and river valleys.

我生活在草原、沙漠、热带雨林和河谷。

The mountain ridges of the south are composed of old red sandstone separated by limestone river valleys.

南部地区的山脊由古老的红砂岩组成，中间被石灰岩的河谷分离。

The towering alps and low-lying river valleys are bearing the weight of Chongqing 's civilization history of 3, 000 years.

巍峨的高山，低回的河谷，承载着重庆三千年的文明史。

Forests in river valleys, steep often rocky slopes; 1300-3500 m. S Sichuan, Yunnan [NE India, ? N Myanmar].

在河流域，陡的通常岩石坡的森林；1300-3500米四川南部，云南[印度东北部，？缅甸北部]。

river valleys

例句