Because Biosphere 2 is a closed system, rainfall and aimospheric makeup can be regulated and measured, a1lowng scientists to conduct controlled experiments.是什么意思_Because Biosphere 2 is a closed system, rainfall and aimospheric makeup can be regulated and measured, a1lowng scientists to conduct controlled experiments.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句