The upper cretaceous period may once strong acid rain,soil including strontium,trace elements being dissolved,dinosaurs through drinking water and food directly or indirectly intake of strontium,appear acute or chronic poisoning,last batch died.
英语翻译白垩纪末期可能下过强烈的酸雨,使土壤中包括锶在内的微量元素被溶解,恐龙通过饮水和食物直接或间接地摄入锶,出现急性