string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%90%8C%E9%9F%B3%E5%AD%97%E5%A6%82%E6%9E%87%E6%9D%B7%E5%92%8C%E7%90%B5%E7%90%B6 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
同音字如枇杷和琵琶
