My dad and his friend watched as we carefully poured the molten lead through a small hole in the top of the plaster-of-Paris cube.是什么意思_My dad and his friend watched as we carefully poured the molten lead through a small hole in the top of the plaster-of-Paris cube.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句