防冻设备的英文：
frost precautions

frost是什么意思：
n. 严寒；霜；冷淡
v. 结霜（于）；冻坏

Frost is an enemy of flowers.
霜冻是花卉的大敌。

Frost caused the split in the rock.
霜冻使岩石裂了一条缝。

The crops were blasted by frost.
作物被霜冻毁了。

There is frost on the ground and snow is forecast.
地上结霜了，而且预报说会有雪。

The windows were frosted over.
窗户上结了一层霜。

precautions是什么意思：
n.[C]
1.预防措施或方法

I took an umbrella as a precaution.
我带了一把伞以防下雨。

All this woke the local government to the need for safety precautions.
所有这些使当地政府认识到必须采取安全预防措施。

We have taken necessary precautions against fire.
我们已采取必要的防火措施。

With such precautions the courtiers might bid defiance to contagion
由于采取了这些预防措施，侍臣们根本不必担心传染。

The report is scathing about the lack of safety precaution.
该报道对缺乏安全预防措施一事严加指责。