The Vostok ice confirmed that concentrations of CO2 and methane rose and fell in a regular pattern during virtually all of the past 400,000 years.是什么意思_The Vostok ice confirmed that concentrations of CO2 and methane rose and fell in a regular pattern during virtually all of the past 400,000 years.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句