instability

n.不稳定；无常

insoluble, insolvency, insolvent, insomnia, insomniac, insomuch, insouciance, insouciant, Insp, inspect, inspection, inspector, inspector of taxes (also tax inspector), inspectorate, inspiration, inspirational, inspire, inspired, inspiring, Inst, instable, install, install (US also instal), installation, installment, instalment, instalment plan, instance, instant, instantaneous, instantaneously, instantly, instate, instead, instead of, instep, instigate, instigation, instigator, instil (US instill),