One of its most important functions in plants is as an intracellular messenger with steep gradients of calcium concentration forming across membranes with a system of calcium pumps.是什么意思_One of its most important functions in plants is as an intracellular messenger with steep gradients of calcium concentration forming across membranes with a system of calcium pumps.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句