He and the girl began to pass notes to each other through the prison bars.

他和那个女孩开始通过监狱的铁栅栏互相传递纸条。

Garrison himself was assaulted in the streets of Boston, finding refuge from the angry mob behind prison bars.

加里森本人在波士顿的街道上遭到袭击，在监狱里躲避愤怒的暴民。