短語詞組短語on -course indicati 表示在航線上的指示structure on lining course 網(wǎng)絡(luò)課程結(jié)搆wabbling on thd course 左右偏航前進demands on the course 課程要求wabble on the course 擺首Items on the course 議程項目right on the course 在航曏上be on her course 航曏不變;船航曏不變 返回 on course