The tent is shaped like a dome with green walls, a grey fly that covers the roof vent, and black netting and flooring.

帐篷展开成圆顶状，四壁为绿色，顶部通风口覆盖物为灰色，并由黑色网和地垫。

youdao

Then they climbed out of the vent, onto the roof, and down 50 feet of piping to the ground where a makeshift raft made from raincoats took them across 1.5 miles of water to San Francisco.

然后从通风口爬到房顶上，再沿着管子下滑50英尺到达地面，到达地面后，用雨衣做了个临时的小船，顺水漂了1.5公里后，终于到了旧金山。

youdao

Behind their cells was an unguarded corridor that led to a vent on the roof.

在他们的牢房后面有一个无人看守的走廊，走廊的尽头有一个通往房顶的通风口。

youdao

Thieves entered the building, just a few blocks from the U.S. capitol, through a vent on the roof.

CNN: Thieves break into office of Israeli candidate's pollster