第一层的英文：
ground floor; first floor

The "lady" is on the ground floor .
女厕所在第一层。

The first lining is normally mull, the second lining normally kraft.
第一层通常是纱布，第二层是牛皮纸。

And straightaway he beheld the first spell
他当时就发现了第一层魔障。

The first layer of tar is nailed to the boarding.
第一层油毡是用钉子钉在木板上的。

If you are creating a new name, fill-in the field provided under "TLD" with the TLD part of your name.
如果你正在创造领域在“第一层领域” 之下用你的名字第一层领域部份提供的一个新的名字，代替者。

The second-floor framing was not appreciably affected and only a few of the first-floor joists were fractured
第二层楼板构架所受影响较小，只有第一层楼板少数托梁裂断。

on solid ground
在稳固的基础上

Their ship was grounded.
他们的船搁浅了。

The ground has thawed.
地面解冻了。

floor of the House
英国议会中议员的座席|议员席

floor criterion
最低额标准

The meeting room is in the third floor, sorry, the fourth floor.
会议室在三楼，抱歉，是四楼。

the First International
第一国际（1864－1876）

first approximation
第一次近似;第一近似值;初步近似;一次近似值;一级近似;首次近似

There was a hush at first.
先是一阵寂静。