许多科学家认为，否则。
许多科学家认为一个新的种类是不太可能的。
许多科学家认为液态水是生命存在必不可少的条件！
Many scientists think that liquid water is essential for life!
许多科学家认为，导致艾滋病的病毒来自非洲的青猴。
Many scientists think, the virus which causes AIDS did jump from the African Green Monkey.
举例来说，许多科学家认为，氯乙烯接触可造成肝脏或肾脏受损。
For example, many scientists believe perchloroethylene exposure can cause liver or kidney damage.
多年来，许多科学家可能认为这是一个很冷僻的问题。
For years, many scientists would have considered that to be a trick question.
多年来，许多科学家可能认为这是一个很冷僻的问题。
For years, many scientists would have considered that to be a trick question.
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