英 [fɜ:st flɔ:(r)] 美 [fɝst flɔr]
一楼：指地面楼层上面的楼层，尤其是在英国。
first floor //
可数名词 The first floor of a building is the one at ground level. 一楼
可数名词 The first floor of a building is the floor immediately above the one at ground level. 二楼
the floor of a building that is at or nearest to the level of the ground around the building
同义词： ground floor / ground level
第二层
... ground floor 第一层(注意：中国的一楼在英国是被叫做0层的) first floor 第二层 lift 电梯 ...
早餐在马路对面的建筑物二楼（first floor），门外没有任何标志。可早餐的内容还不错，有一杯橙汁，一个鸡蛋，一小块蛋糕，两块面包外加一块薄薄的火腿肉。
...后来，阿姨说“地下ground floor”时我终于想起了高中时便学过但后来可能没注意的，即中美和多数国家管一楼叫一楼（First Floor），逐上以此类推。
第一层（first floor）：漏斗设置漏斗..
Our family lives on the first floor.
我们家住在二楼。
In America, it's the first floor.
在美国，这一层则被称为一楼。
I live on the first floor.
我住在一楼。
Cows were kept on the first floor and the one above was used to store hay.
VOA : special.2009.12.29
I know some of you come from Europe and other parts of the world where the ground floor is rez-de-chauss?e or some silly thing like this 1 and you push a button on the elevator to one and you go up to the first floor.
我知道你们中间有些人来自欧洲,或者世界其他地方，你们那里的一楼,和地面齐平，或者像这样可笑的事情,比如你要按下电梯的按钮,然后才能上到真正的1楼。
固态化学导论课程节选 : 麻省理工公开课
I live on the second floor, he lives on the first floor.
我住在二层，他住在一层。
人性课程节选 : 普林斯顿公开课
The young woman reached the statue by climbing through a window on the sixty-first floor.
VOA : special.2009.05.10
Barbara Klein tells us more. One of the first works in the "Common Threads" exhibit looks like glowing orange cave formations coming out of the floor and ceiling.
VOA : special.2009.07.17
The cause of the fire, which damaged the basement and first floor, is under investigation.
He entered a classroom on the first floor and killed four children in one class room.
FORBES: Brazil Soccer Star Ronaldinho Causes Stir in Rio Hospital
The police video showed officers entering the property and views of the first floor flat.