Few rocks can resist the continuous blast of the sand carrying wind. 岩石很难抵挡风沙持续不断的摧残
Grains, swept up the flanks, are blown off the crests of the ridges 斜坡上吹起的沙粒 在沙丘顶部的边棱处飞扬
These sand scenes can be hundreds of miles across. 这些沙漠布景可宽达数百英里
In Namibia the winds have built some of the biggest dunes in the world. 在纳米比亚 风塑造了 一些世界上最大的沙丘
The ferocious wind, armed with grains of sand, 夹杂着沙粒的强风
and reduce visibility for days over areas the size of Britain. 所到之处能见度骤降为零 几天内横扫的地区比英国还大
Africa's Sahara is the largest desert of all. 非洲的撒哈拉沙漠是世界上最大的沙漠
and the biggest source of sand and dust in the entire world. 也是全世界最大的沙尘源
Dunes of sand hundreds of miles long streak their surface. 绵延数百英里的沙丘像是一条条皱边花纹