insole

n inside surface of the bottom of a shoe 鞋的内底; 鞋垫.

insignia, insignificance, insignificant, insignificantly, insincere, insincerely, insincerity, insinuate, insinuation, insipid, insipidity, insipidly, insist, insist on sth. (doing sth.), insist upon, insistence, insistent, insistently, insofar, insofar as, insolence, insolent, insolently, insoluble, insolvency, insolvent, insomnia, insomniac, insomuch, insouciance, insouciant, Insp, inspect, inspection, inspector, inspector of taxes (also tax inspector), inspectorate, inspiration, inspirational, inspire,