Generally speaking, enclosure walls of quadrangle dwellings and houses line along the street have no Windows to outside, yard's surrounding is closed and quiet.
四合院的围墙和临街的房屋一般不对外开窗，院中的环境封闭而幽静。
2
This system consists of an enclosure, closed in on three sides.
它由一个围壁组成，三边被封住。
3
Contacts on the filter unit and the field charging unit engage cooperating contacts on an enclosure mounted on the frame when the door is closed to supply electrical power.