n.不透明性( opacity的名词复数 )，费解，难懂，模糊...

opacities的音标：...

These opacities are prooved to be iron - containing substances by Prussian blue stain.普鲁士蓝染色证实为含铁之色素.In the organizing phase, architectural distortion, traction bronchiectasis, cysts, and reticular opacities are seen.在机化...