单词：variegated sandstone
单词：variegated sandstone 相关文章
The rock called sandstone is made up of a great many grains of sand. The beating of the rain on this rock washes the grains apart, and so the hard sandstone slowly changes into loose sand. 砂岩主要由大量沙粒组成。当雨水打下来的时候
英国学生科学读本
The Strange and Beautiful World of Arches National Park 犹他州拱门国家公园:奇怪而美丽的世界 This week on our national parks journey, we travel to Utah. The western state is home to several of the most popular national parks in Americ
2016年VOA慢速英语(十)月
On Stephanies advice Emma had written letters to publishers, to agents, then to bookshops, but nothing. There was a recession on and people were clinging to their jobs with grim determination. She thought about taking refuge in education, but the gov
有声英语文学名著
A traveller who had visited Asia，Africa and Europe，at length，in making his tour through America，was overcome by heat，and lay tore pose under a tree．He had scarcely begun to doze when he was roused by a loud noise，of which he could not d
趣味英语
Lesson 50 Only A Stone 第50课 只是一块石头 What is the oldest thing you have seen? One boy thinks it is a church, for he has seen a date on one which tells that it was built hundreds of years ago. 小朋友，你见过的最古老的东西是什
英国学生科学读本