应该是一个字吧 http://www.baidu.com/s?kw=&sc=web&cl=3&tn=sitehao123&ct=0&rn=&lm=&ie=gb2312&rs2=&myselectvalue=&f=&pv=&z=&from=&word=%D3%D0%C2%ED%C4%DC%D0%D0%C7%A7%C0%EF%A3%AC%D3%D0%CD%C1%C4%DC%D6%D6%D7%AF%BC%DA%A3%AC%D3%D0%CB%AE%C4%DC%D1%F8%D3%E3%CF%BA%A3%AC%CC%AB%D1%F4%C2%E4%C9%BD%C1%CB%A3%AC%D2%BB%B8%F6%D0%A1%BA%A2%CF%B2%BB%B6%D5%BE