它有高高的围墙和坚固的大门。

It had high walls and strong gates.

youdao

由于这一点，学校总是把我们盯得紧紧的，甚至有那么两星期时间，没有(校方人员)陪同，还不允许我们离开校园(校园有围墙和大门)(美国的学校没有围墙，所以作者需要特别强调这一点——译者注)。

Because of that, they wanted to keep a close eye on us, and for a couple of weeks they wouldn't let us out of the school grounds without an escort (there was a fence and a gate around the campus).

youdao

在17世纪下半叶，在三一街和连接大门和教堂的建筑之间的空地上有一个围墙花园。

In the second half of the seventeenth century there was a walled garden in the free space between Trinity Street and the building which joins the Great Gate to the chapel.

youdao