产生

produce; generate; get; engender; spawn; create; cause; invoke; originate; realize; emanate; yield; bear; rouse; put out; turn in; set up; generation; production; arrival; formation; birth; born

代沟

generation gap

原因

reason; cause; source; rationale; basis; occasion; motive; motivation; sense; meaning; anatomy; recipe; explanation; causation; causal