The department is reviewing its policy with regard to immunisation.是什么意思？

The department is reviewing its policy with regard to immunisation.

这个部门正在审度其有关疫苗接种的政策。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

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

department

n. 部门，部，系，学部，知识范围，车间；

例句
They move freely from one department to another as they ascend the civil service ladder.
随着仕途晋升，他们可以在部门间随意调动。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

reviewing

v. 检验( review的现在分词 )，复查，写…的评论文章，复习功课，温习功课；

例句
They spoke at length, reviewing the entire incident.
他们把事情的整个经过详尽地复述了一遍。

its

pron. (it的所有格形式)它的，厥；

例句
The government is to accelerate its privatisation programme.
政府将加快其私有化计划的进程。

policy

n. 政策，策略，保险单，策略性；

例句
We have seen this as an attempt to place the blame for a policy that has gone adrift.
我们已经认识到，这是把责任归咎于一项已偏离方向的政策的一种企图。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

regard

vt. 认为，注视，涉及，尊敬；vi. 凝视，留意；n. 凝视，留意，尊敬，问候；

例句
In many societies young men regard themselves as highly active, the agents of change, shapers of the world.
在许多社会中，年轻人将自己看成是高度活跃的分子，是变革的推动者和世界的塑造者。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

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

immunisation

n. 免疫(immunization)；

例句
The disease was stopped in its tracks by immunisation programmes.
免疫方案阻止了这种疾病的蔓延.