string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%88%91%E5%9B%BD%E5%A4%A7%E9%99%86%E6%9C%89%E5%87%A0%E4%B8%AA%E6%B5%B7%E5%B3%A1 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
我国大陆有几个海峡
