副书记的英文：
assistant secretary
deputy secretary

assistant是什么意思：
adj. 辅助的；助理的
n. 助手；助教

assistant starter
助理发令员

The shop assistant has undercharged us.
售货员向我们要价很低。

Assistance for the reconstruction and development of Lebanon
为黎巴嫩的重建和发展提供援助

secretary是什么意思：
n. 秘书，干事，大臣，部长，助理

The position of secretary is void.
秘书的职位现在空缺。

I have got a secretarial qualification.
担任秘书的资格证明。

He was the then secretary of Defense.
他是当时的国防部长。

deputy是什么意思：
n. 代理人；代表；议员；副手
adj. 代理的；副的

He is the deputy mayor of the city.
他是本市的副市长。

By convention the deputy leader is always a woman.
按照惯例这一领导人的副职总是由女子担任.

The Deputy Fuehrer found himself in eclipse.
这位副元首觉得自己已黯然失色。