indicate

verb [vt. 及物动词]表明，标示；象征，暗示；间接提及，示意；指示，指出；<英>（用灯光或手臂）打行车转向信号；有必要，被建议

If you indicate an opinion, an intention, or a fact, you mention it in an indirect way.
暗示 •  Mr. Rivers has indicated that he may resign.  里弗斯先生已经暗示他可能要辞职。