事机

事机	shì jī	confidential aspects of a matter / secrets / key moment for action
事	shì	matter / thing / item / work / affair / CL:件,桩,回
机	Jī	surname Ji
机	jī	(bound form) machine; mechanism / (bound form) aircraft / (bound form) an opportunity / (bound form) crucial point; pivot / (bound form) quick-witted; flexible / (bound form) organic