We set a limit to the expense of the trip.

我们规定了这次旅游的费用。

They have to set a limit to the expense of the trip.

他们不得不限制这趟旅行的费用。

Set a limit to the number of tasks you take on each day and stick to it.

在你每天必须要做的事情上设定一个限度，然后坚持下去。

Even in difficult times we must take care to set a limit to taxation so that the burdens, though heavy, will not hurt the people.

虽在困难时期，我们仍要注意赋税的限度，使负担虽重而民不伤。

Later on, dynamic adjustments were made in an effort to soften the intensity of and set a limit to the tax rebate measure. This is a gradual process of improvement.

之后，使用这种措施的力度和范围就发生了动态调整，这反映了不断演进和进步的过程。