Thus , due to the action of ultra violet rays on the skin , substances are produced in the skin which get into the blood and accelerate the processes of metabolism in the various organs of the body.是什么意思_Thus , due to the action of ultra violet rays on the skin , substances are produced in the skin which get into the blood and accelerate the processes of metabolism in the various organs of the body.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句