Don't let state funds lie idle.

不要积压国家资金。

《新英汉大辞典》

None of our machines lie idle .

我们的机器没有一台是搁置不用的。

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Aerial photos of plumeless smokestacks suggest factories lie idle.

航拍照片里没有冒烟的烟囱，显示出工厂都在闲置。

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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