我在配置防火墙的时候　
sq(config)# static (inside outside) 218.28.213.114 10.65.135.4 netmask 255.255.255.255 0 0
syntax error, expecting ')' or ','
Usage: [no] static [(real_ifc, mapped_ifc)]
{<mapped_ip>|interface}
{<real_ip> [netmask <mask>]} | {access-list <acl_name>}
[dns] [norandomseq] [<max_conns> [<emb_lim>]]
[no] static [(real_ifc, mapped_ifc)] {tcp|udp}
{<mapped_ip>|interface} <mapped_port>
{<real_ip> <real_port> [netmask <mask>]} |
{access-list <acl_name>}
[dns] [norandomseq] [<max_conns> [<emb_lim>]]
这是什么意思，我该怎么办