题目内容
约翰. 斯诺能够肯定地宣布,这种污染了的水携带着病菌。
John Snow was able to ________ __________ _________ that _______ water carried the virus.
announce with certainty polluted
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题目内容
约翰. 斯诺能够肯定地宣布,这种污染了的水携带着病菌。
John Snow was able to ________ __________ _________ that _______ water carried the virus.
announce with certainty polluted