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질문할 때 예의를 지키시기 바랍니다.(빨리... 고수분만..... 이런 식의 요구는 자제 바랍니다.)
질문 내용 :
So for many years it was a mistery as to why the sea should have so little salt in it, given the rate of runoff, and particularly if the world was supposed to be hundicus of millions of uears old.
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2022-04-26 12:22:57