情况正好相反用英语怎么说?

有两个曲线图,一条曲线是稳定的逐年增加,另一条是稳定的逐年减少.
The two graphs, one graph increase steadily year after year,while the other graph in the opposite situation.

第一个事件表达完后,在衔接处可接
In contrast to the first one,......
意为于第一种情况相反,且有对照的意思

They are going in the opposite direction.

the opposite is true of the other one...

on the contrary，英语中常用这个词组作为转折连词，用来引出另一种情况
The tendency of the next table is contrary to the first ones.