Homes like this 25 million pound one with two basement levels, including a bar...and spa.

这样的房子价值2500万英镑，地下室有两层，包括一个酒吧… … 和水疗场。

In many parts of the United States, such as in the Midwest and in the east, the houses often have basements a level below the ground.

在美国的许多地方，例如在中西部和东部， 房屋的地下室通常比地面低一层。

At the same time, a more open-plan children's room on the basement level invites interaction while preventing noise from filtering upward and disturbing those concentrating in the lofty perches above.

同时，地下一层的大开间儿童阅读区利于互动，又避免了吵闹声向上传递，打扰高处潜心阅读的人。