求翻译：院门，是四合院的主要入口，北京人习惯叫它“街门”。在北京那众多的院门中，大致可以分出这样两类，即和随墙式门。前者有门洞，门占一间屋；后者没门洞，只在墙上开门。细说起来，屋宇式大门又分成王府大门、广亮大门、金柱大门如意门等；随墙门有小门楼、车门等。是什么意思？

The courtyard is the main entrance of the courtyard, Beijing used to call the street door. In Beijing that many of the courtyard, roughly the separation of such two types, namely, and with the wall door. Former openings, the door having a room; which no openings, only to open the door in the wall. E