You should ensure against loss of heat by having double glazing.是什么意思？

You should ensure against loss of heat by having double glazing.

你应装双层玻璃以免散热.

you

pron. 你，你们，您们，各位，大家；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

should

应该，将会，可能，本应；

例句
The older child should be able to prepare a simple meal...
那个年纪稍大的孩子应当会做一顿简单的饭菜。

ensure

vt. 确保，担保获得[避免]，使（某人）获得，使安全；

例句
...an effort to ensure that the disabled achieve real acceptance.
为确保残疾人真正得到接纳而作出的努力

against

prep. 反对，对…不利，紧靠，以防；

例句
His hand brushed against hers; it could have been either accidental or deliberate.
就在有意无意间，他的手轻轻拂过她的手。

loss

n. 损失，减少，丢失，遗失，损耗，亏损，失败；

例句
The company cannot accept responsibility for loss or damage.
公司不承担丢失或损坏的责任。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

heat

n. 热，热度，高温，热烈，激烈，（身体的）发烧，发热，发情；vt.&vi. 使温暖，使热，激发…的感情，使兴奋；

例句
The presence or absence of clouds can have an important impact on heat transfer...
有无云层对热量的传递会产生重要的影响。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

having

n. 所有，持有；v. 有( have的现在分词 )，（亲属关系中）接受，拿，买到；

例句
He was accusing my mum of having an affair with another man...
他指责我妈妈与另一个男人有染。

double

adj. 双的，两倍的，两面派的，双人用的；vt. 使加倍，把…对折，重复；vi. 加倍，加倍努力，快步走；adv. 两倍地，双重地；n. 两倍，双精度型；

例句
She was elegantly dressed with a double strand of pearls about her neck.
她着装典雅，搭配着一条双层珍珠项链。

glazing

n. 玻璃装配业，玻璃窗，上釉，上光；v. 装玻璃( glaze的现在分词 )，上釉于，上光，（目光）变得呆滞无神；

例句
Calender is glazing coater matching equipment.
压光机是上光涂布机的配套设备.