<p style="font-size: 12px;color:#aaa;">版权引用：<a href="https://avopix.com/photo/391389-standing-cow-1828-by-jean-bernard-1775-1883-original-from-the-rijksmuseum"><span style="font-size: 12px;color:black;">“Standing cow (1828) by Jean Bernard (1775-1883). Original from The Rijksmuseum.”</span> </a>由 <a href="https://avopix.com/author/photos/rijksmuseum-source"><span style="font-size: 12px;color:black;">Rijksmuseum (Source)</span></a> 授权许可 <span><a href="https://creativecommons.org/publicdomain/zero/1.0/deed.zh" target="_blank" style="font-size: 12px;color:black;">CC0 1.0 Universal Public Domain Dedication<img src="" style="display: inline-block;height: 16px;width: auto;"></a></span></p>