The primary tissue of higher plants,composed of thin-walled cells and forming the greater part of leaves,roots,the pulp of fruit,and the pith of stems.是什么意思_The primary tissue of higher plants,composed of thin-walled cells and forming the greater part of leaves,roots,the pulp of fruit,and the pith of stems.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句