It makes Twitter less open, less public and more like a walled garden.

这让推特的开放性和公共性减弱，让其更像是一个带围墙的花园。

There's a walled garden up the road.

前面有个带围墙的花园。

St John's Wood, on the other hand, is favoured mostly by upper middle class families who prefer a detached house surrounded by a walled garden, thus ensuring their privacy.

另一方面， St John's Wood 主要受到上层中产阶级家庭的青睐， 他们更喜欢被围墙花园包围的独立式住宅， 从而确保他们的隐私。