ground floor底层；第一层

【使用地区】：英国

【释义】：

In Britain and many other places throughout the world，the street—level floor of a building is called the ground floor，while the next one up is called the first floor．In America these would be the first and second floors，respectively．

在英国和世界上许多其他地区，大楼的街面一层被称作ground floor，它上面的一层叫first floor。在美国却分别被称为first floor和second floor。