介绍贺兰山的英语作文100字在线等急

The Helan Mountains, frequently called Alashan Mountains in older sources, are an isolated desert mountain range forming the border of Inner Mongolia's Alxa League and Ningxia. They run north-south parallel to the north-flowing Yellow River in the Ordos Loop section. The river is mostly east of the mountains, but in the north it crosses without making a significant gorge and flows on the west side. To the west is severe desert. To the east is an irrigated area with the cities of Yinchuan and Shizuishan.