新月

Patterns in Nature: Sand Strange creatures slithering up from the Empty Quarter desert floor in the Arabian Peninsula are really a network of barchan dunes—sculpted by winds that over time strike the sand from a consistent direction.

奇怪的动物不稳定的滑动从空季度沙漠基底在阿拉伯半岛真的是一个网络新月形沙丘――雕塑被风，随着时间的推移冲击沙子从一个恒定不变的方向。

Strange creatures slithering up from the Empty Quarter desert floor in the Arabian Peninsula are really a network of barchan dunes—sculpted by winds that over time strike the sand from a consistent direction.

在阿拉伯半岛的空域沙漠上，新月形的沙丘蜿蜒而行，如同一种奇特的生物。它们是由风长期从同一个方向侵蚀而成。

Patterns in Nature: Sand Strange creatures slithering up from the Empty Quarter desert floor in the Arabian Peninsula are really a network of barchan dunes—sculpted by winds that over time strike the sand from a consistent direction.

沙在自然界的模式。奇怪的创造物不稳定的滑动从空的沙漠地面在阿拉伯半岛真的是一个网状物的新月形沙丘――被风雕塑随着时间的推移侵袭的沙子从一个恒定不变的方向。

Strange creatures slithering up from the Empty Quarter desert floor in the Arabian Peninsula are really a network of barchan dunes—sculpted by winds that over time strike the sand from a consistent direction.

奇怪的动物不稳定的滑动从空季度沙漠基底在阿拉伯半岛真的是一个网络新月形沙丘――雕塑被风，随着时间的推移冲击沙子从一个恒定不变的方向。

Barchan ; windward flank ; wind speed\|up simulation ; dune shape

新月形沙丘；迎风坡；加速模拟；沙丘形态

Field measurement of surface wind velocity and sediment transport rates was made on barchan dune in Wulanbuhe desert to understand. The results show that the wind velocities increasing upon windward slopes of the dunes vary with both slope morphology and wind velocity at the foot of the dunes.

对乌兰布和沙漠新月形沙丘表面风速的野外观测结果表明，沙丘迎风坡气流加速量主要和沙丘坡面形态、迎风坡前来流风速有关，迎风坡风速放大率介于1.02~1.59之间。

Velocity speeding\|up on the windward flanks of barchans is a dynamic factor which control dune formation and dune shape.

迎风坡气流加速是决定新月形沙丘发育和形态的动力因子，研究这一加速过程的定量关系有利于认识沙丘的发育、沙丘的形态、沙丘的运动等。

Barchans are mobile, crescent-shaped dunes that move in the direction of the prevailing wind at rates as high as 33 feet (10 m) per year, sometimes even covering infrastructures such as this road in the Nile Valley.

Barchans是移动，新月形沙丘是朝着在高达33英尺（10米）每年，有时甚至包括象这样在尼罗河谷公路基础设施利率主导风向。

Turn right at the corner of Sunset and Crescent Heights Boulevards.

在夕阳街和新月山庄大街路口向右转。

Closer still are picturesque buttes and mesas of the Canyonlands National Park in Utah, USA, lit by a crescent moon.

再近一点儿，就是美国犹他州峡谷地国家公园的丘陵和岩地，沐浴在新月的光芒之中。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了