代笔的英文：
ghostwrite
write on sb's behalf
A deputy acting for his superior
代笔代行
He was hired to ghost the memoirs of a famous executive.
他被雇来替一著名的官员代笔写自传。
vt.
vi. 代笔
behalf是什么意思：
n. 代表；利益
They campaigned on behalf of asylum seekers.
他们为政治难民发起运动。
We work for national behalf.
我们为国家的利益工作。
I'm collecting on behalf of the blind.
我正在为盲人进行募捐。
To ascribe on behalf of another in an unwarranted manner.
不正当地…归于以无根据的方式把某事归于某人
A lawyer acts on behalf of his client.
律师作为当事人的代言人。