这个女士穿着长筒尼龙缝袜，不停地把裙子弄平整。This woman wore seamed nylons and kept smoothing her skirt.在挑选长筒靴的时候，购买上等的好皮靴将是明智的选择。When selecting boots, fine, quality leather will be a wise investment.他穿着马裤和长筒靴，靴上带着马刺。He was wearing riding pan...
照像材料含有亲水胶体的感蓝卤化银卤剂层.The photographic elements contain a blue - sensitive hydrophilic colloid silver halide emulsion layer.分子兼有亲水的和疏水的两个基团,叫做两性的或两亲的.Molecules with both hydrophilic and hydrophobic groups are called amphip...