人们已经确定了每一码富含金矿的矿石，并把它们的位置标在了地图上，这种假设根本不符合逻辑。
It is not logical to suppose that man has located and marked on a map every yard of gold-laden rock.
人们已经开始努力确定使用昆虫作为生物控制手段的可行性，但仍认为有效的生物控制手段还需要数年时间。
Work has begun to determine the feasibility of using insects as biological controls, but effective biological controls are considered years away.
市场一体化和互联网已经确定能够带给几十亿的人们更加紧密的联系。
The integration of markets and the Internet have certainly brought billions of people into closer contact.
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