急
I1〔速いこと〕swiftness; rapidity急な(に) swift(ly); rapid(ly)海峡の流れが急だThere is a swift [rapid] current in ...
事変
1〔出来事〕an incident;〔騒乱〕a disturbance2〔宣戦布告なしの戦闘行為〕満州事変the Manchurian Incident
変動
1〔変化〕(a) change;〔相場などの〕(a) fluctuation ((in, of))変動する (undergo a) change; fluctuate我々は社会の激しい変動につい...
incident
[名]1 CU(主に不快な)出来事,騒動,事故,重大[暴力]事件(⇒event[類語])a serious [an isolated] incident深刻な[単発の]事件nuclear inc...