Then we had the noun agent.

然后我们说到了名词代理人。

The second main reason that English speakers use the by-passive is because the agent noun phrase is long.

施动名词短语过长。

English speakers often choose to use the passive voice instead of the active voice when the agent noun phrase is lengthy.

当施动名词短语很长时，英语母语人士通常选择使用被动语态而不是主动语态。