downhill

翻译：

Things have gone steadily downhill. We should do something for it.

造句：

You've done the most difficult parts of the task, so it should be downhill all the way from now on.

造句参考--牛津英语习语词典：

I’ve done three out of the four parts of the course, so it should be downhill all the way from now on.

我已经完成了课程的四分之三，这以后应该会容易多了。