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1·To water-soluble protein, its aqueous solution is hydrophilic colloid.

对水溶性的蛋白质来说，它的水溶液是亲水性胶体。

2·The photographic elements contain a blue - sensitive hydrophilic colloid silver halide emulsion layer.

照像材料含有亲水胶体的感蓝卤化银卤剂层。