请教
怀孕母猪耳朵里面黑呼呼是什么？http://bbs.zhue.com.cn/data/attachment/forum/201703/08/215110yyrqw7qzwwibfz3u.jpghttp://bbs.zhue.com.cn/data/attachment/forum/201703/08/215111q2w542j8bdlvx8e4.jpghttp://bbs.zhue.com.cn/data/attachment/forum/201703/08/215111x0g2y7e4j2j7jg3f.jpg
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