如何发生的 Japans Tsunami How it Happened
无论发生何事 happen what may
任何事都会发生 Anything can happen
任何一次发生 any one occurrence ; a.o.o
如何发生 how did it happen
这是如何发生 how did that happen
它是如何发生 how did it happen
没有任何事发生 Nothing happened ; There is no event occurred
诗不能使任何事发生 Poetry makes nothing happen
这次事故是如何发生 how did the accident happen
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