The under coat must not show through the outer coat.

内层不得透过外层露出。

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The Pyr has a heavy, primarily white double coat, that consists of a soft undercoat combined with a thicker outer coat.

大白熊拥有双层被毛，即柔软的绒毛和厚密的外毛。

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The outer coat is stiffer and longer on the neck and back, and in males considerably more profuse at the shoulder, giving them a more ruffed appearance.

颈部和背部的外层披毛长而硬，雄性在肩胛的毛发也非常丰富，形成脖圈的外观。

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The forensics expert said the outer surface of April's coat was waterproof and would not shed fibres but the lining and fake fur of the hood could.

BBC: April Jones