insurance

n.保险，保险费；保证

insubstantial, insufferable, insufferably, insufficiency, insufficient, insufficiently, insular, insularity, insulate, insulated, insulating, insulating tape, insulation, insulator, insulin, insult, insulting, insuperable, insuperably, insupportable, insurance broker, insurance policy, insurance premium, insure, insured, insurer, insurgent, insurmountable, insurrection, insurrectionist, int, intact, intaglio, intake, intangibility, intangible, intangibly, integer, integral, integral calculus,