an old engraving of London Bridge古老的伦敦桥版画The process of preparing a printing surface electrotyping by first engraving on a wax - coated metal plate.'蜡'.''模,''.'蜡'.''刻制版&#...
购物的人们小心翼翼地择路避开由于连续下雨形成的水坑。Shoppers picked their way through puddles caused by persistent rain.还有更多熟悉的地貌是因地表侵蚀形成的。More familiar landscapes have been sculpted by surface erosion.这个水库是通过在布莱斯河上筑坝形成的。This reservoir was formed...