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来源：雅诚德英语网
In the nineteenth century, scientists made a number of important, but unsuccessful attempts to calculate Earth's age from the record of various natural processes.
19世纪，科学家们做了许多重要的尝试，希望通过各种自然过程的记录来计算地球的年龄，但都未能成功。
In the nineteenth century, scientists made a number of important, but unsuccessful attempts to calculate Earth's age from the record of various natural processes.
19世纪，科学家们做了许多重要的尝试，希望通过各种自然过程的记录来计算地球的年龄，但都未能成功。