occur,take place,happen,break out有什么区别?

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occur,takeplace,happen,breakout有什么区别?occur,takeplace,happen,breakout有什么区别?occur,takeplace,happen,bre

occur,take place,happen,break out有什么区别?
occur,take place,happen,break out有什么区别?

occur,take place,happen,break out有什么区别?
come about(=happen)(不及物)发生,产生happen vi.发生,强调偶然性take place vi.发生,强调必然性或按事先的安排或计划而发生break out vi.发生,指灾难性的战争、火灾、疾病等的爆发occur vi.指意想不到的事情的发生