https://github-releases.githubusercontent.com/53698446/883bc5d6-9260-11e7-90b7-f13aa92c3f6d?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIWNJYAX4CSVEH53A%2F20210609%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20210609T065914Z&X-Amz-Expires=300&X-Amz-Signature=186bdbd656ab48cea25752a184f29ac927bbbddb544cf8118b2967439d5c36bb&X-Amz-SignedHeaders=host&actor_id=0&key_id=0&repo_id=53698446&response-content-disposition=attachment%3B%20filename%3Dadventure-works-2012-oltp-data-file.mdf&response-content-type=application%2Foctet-stream
复制链接到迅雷可以下载，有时候要找好久。