A great deal is now known about the kinds of damage produced in the DNA by ultraviolet radiations, to a lesser extent, by ionizing radiations.是什么意思_A great deal is now known about the kinds of damage produced in the DNA by ultraviolet radiations, to a lesser extent, by ionizing radiations.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句