执行前后对比英文

picture a is not worked,and picture b is worked,now,let's look at the contrast between a and b(worked,adj.处理过的)

before taking the task

"the ogiginal(one)" and "the renovated one"或者直接用形容词:original和renovated。整句写法：Contrast between the original one and the renovated one.你要标了"图a"和"图b",则直接说：Contrast between (picture)a and b.