他在门前的粗糙的垫子上把鞋上的泥蹭掉.The edges of the floor mat are coming undone because they have not been bound properly.\x0d地毯的边缘松开了,因为没有适当的滚边.Each features Ricoh’s Acu-Bright mat for optimum brightness and easier focusing in dim light.\x0d每种都采用理光的精确取光技术,以提供最佳亮度,且具有暗光下以对焦的特点.Matrix (Mat):(1) Mould from which typeface is cast or photographic master of type fount.(2) An array of elements in row and column form.