I think you should go back to your original plan.

我认为你应该回头执行你原来的计划。

Many people expressed a strong preference for the original plan.

许多人强烈表示喜欢原计划。

We've altered the original plan to some extent.

我们部分地改变了原计划。

The original plan was to go by bus.

起初的计划是乘公交车去。

He never deviated from his original plan.

他从未偏离自己最初的计划。