户口制度改革的英文：
reform of the household registration system

reform是什么意思：
v. 改革；改良
n. 改革

A reformation intended to counter the consequences of a previous reformation.
反改革为抵消前一种改革的后果而进行的一种改革

He is a man hostile to reform.
他是反对变革的人。

They have made the constitutional reform.
他们已经做了宪法的修改。

household是什么意思：
adj. 家喻户晓的；日常的，家常的；王室的；家庭的
n. 家庭；家务

He is a household legendary figure.
他是个家喻户晓的传奇性人物。

Computers have become household toys.
计算机已成了家庭的消遣玩意儿。

He was sent to superintend a household staff.
他被派去管理佣人。

registration是什么意思：
n. 注册，登记；登记证，注册证

There is no method in the way they do registration.
他们登记的毫无条理。

Would you fill in this registration form?
麻烦填写这张住宿登记表。

Did you see the registration number?
你看见车牌号了吗？