立定lìdìng 1.军事或体操口令,命令正在行进的队伍(也可以是一个人)停下并立正。{(word of command for use in an army or physical exercises, directed at a team or a person in a marching procession) Halt!} 2.站稳{stand firmly}: ～脚跟。{stand firmly on one's heels} 3.牢固地确定{firmly established}: ～主意{be determined}|～志向。{make up one's mind; set one's resolve}