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来源:雅诚德英语网
He tries to catch volcanoes when they are their highest levels of activity, but calculating the ups and downs of the eruptions can take days to complete.
但是考虑到火山喷发,跌宕起伏,须耗时数日。
He tries to catch volcanoes when they are their highest levels of activity, but calculating the ups and downs of the eruptions can take days to complete.
但是考虑到火山喷发,跌宕起伏,须耗时数日。