精选优质文档-倾情为你奉上2016年5月三级笔译真题及答案英译汉部分Old people in Widou Thiengoly say they can remember when there were so many trees that you couldnt see the sky. Now, miles of reddish-brown sand surround this village in northwestern Senegal, dotted with occasional bushes and trees. Dried animal dung is scattered everywhere, but hardly any dried grass is.Overgrazing and climate change are the major causes of the Saharas advance, said Gilles Boetsch, an anthropologist who directs a team of Fre
