the topography of an area某地区的地形Landforms of topography, vegetation and climate are influential factors in formation of soils.地形或地形学 、 植被和气候都是对土壤形成有影响的因素.Two types of keratoconus after PKP have remarkable divergence of po...
Europe's largest producer of nylon is based in Belgium.欧洲最大的尼龙制造商总部设在比利时。A very virulent form of the disease appeared in Belgium.比利时出现了这种疾病的一种极其危险的变体。He was saving his energy for next week's race in Belgium.他正为...