lie idle

基本解释

Don't let state funds lie idle.
不要积压国家资金。
《新英汉大辞典》
In principle, a dollar of government spending can raise output by more than a dollar if it stimulates resources that might otherwise lie idle.
原则上如果刺激不被使用的资源，政府一美元的花费会带来超过1美元的产出。
People and things that lie idle start to lose their productive value. Then you're into all sorts of troubles, " says Karen Ward, senior global economist at HSBC Holdings (HBC) in London.
人和事的闲置使他们开始失去生产价值，之后你就陷入了各种各样的麻烦。

Millions of jobs have left and thousands of plants lie idle.
FORBES: Guest Post: Creating Jobs
This sad little story is being mirrored all over the Gulf: hapless crews find themselves having to beg for rations while their impounded vessels lie idle in port.
ECONOMIST: Sailors stranded in the Gulf
Farmers can also add carbon-rich compost to the soil, and plant "cover crops" such as rye or vetch during parts of the year when land otherwise would lie idle.
NPR: Iowa Farmers Look to Trap Carbon in Soil