insulation

n.隔离，绝缘

instructor, instrument, instrumental, instrumentalist, instrumentality, instrumentation, insubordinate, insubordination, insubstantial, insufferable, insufferably, insufficiency, insufficient, insufficiently, insular, insularity, insulate, insulated, insulating, insulating tape, insulator, insulin, insult, insulting, insuperable, insuperably, insupportable, insurance, insurance broker, insurance policy, insurance premium, insure, insured, insurer, insurgent, insurmountable, insurrection, insurrectionist, int, intact,