to spend less, do less, or use less of something

The government has announced plans to cut back on defence spending by 10 percent next year. 政府宣布了明年国防开支缩减10%的计划。

If exercise is causing you pain, you should cut back. 如果运动让你觉得疼，就应该减量。

to reduce something, or to reduce it by a particular amount

We have had to cut back deliveries. 我们不得不减少送货量。

The government has cut back $150 million of funding. 政府消减了1.5亿美元的经费。

to cut off parts of a tree or other plant so that it becomes smaller

Some shrubs need to be cut back to allow more light to reach them. 一些灌木需要修剪才能让更多阳光照进去。