They have in them millions of millions of cells, some doing one sort of work, some another. Every different cell has its own sort of work to do.是什么意思_They have in them millions of millions of cells, some doing one sort of work, some another. Every different cell has its own sort of work to do.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句