As you place the lower bulb in a mixture of dry ice and alcohol, students witness how the sudden cold makes the water vapor condense into ice crystals.是什么意思_As you place the lower bulb in a mixture of dry ice and alcohol, students witness how the sudden cold makes the water vapor condense into ice crystals.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句