和 stain 相关的搜索结果如下：
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Testing the Wool Clip - Chinese
https://www.awtawooltesting.com.au/index.php/zh/component/edocman/resources/testing-the-wool-clip-chinese -
FAQs
Australian Merino wool produces is to cull such lambs from their flocks. Pigmentation can also be produced by fecal or urine stains, particularly around the breech of the sheep. Management of this type of stain involves crutching sheep before shearing....
https://www.awtawooltesting.com.au/index.php/zh/about/faqs
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