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来源:雅诚德英语网
Interestingly, there's some speculation that humans started having a major impact on Earth much earlier, about 8000 years ago.
有趣的是,有一些推测认为,人类对地球产生重大影响的时间要早得多,大约应该在8000年前。
Interestingly, there's some speculation that humans started having a major impact on Earth much earlier, about 8000 years ago.
有趣的是,有一些推测认为,人类对地球产生重大影响的时间要早得多,大约应该在8000年前。