string(236) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=supply%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D%E8%8B%B1%E6%96%87 => Failed to connect to 101.91.112.32 port 38221: Connection refused"
supply是什么意思英文
