英语翻译Every chemical change either results from energy being s

英语翻译
Every chemical change either results from energy being sued to produce the change,or causes energy to be given off in some form
experts suggest that speech stages are reached in fixed sequence and at a constant age,but there are cases where speech has started late in a child who inversely turns out to be of high IQ.
没啥意思--浪费大家时间,也就是选择一下“无最佳答案而已”