每次尝试使用 SSH 连接服务器时，都会收到以下提示。我输入“是”，但是有没有办法避免这个？
The authenticity of host '111.222.333.444 (111.222.333.444)' can't be established.
RSA key fingerprint is f3:cf:58:ae:71:0b:c8:04:6f:34:a3:b2:e4:1e:0c:8b.
Are you sure you want to continue connecting (yes/no)?