ground floor

基本解释

The heavy spring rain has flooded out the ground floor of the hotel.
这一场春天的大雨淹没了旅馆的底层。
Dear customers, we have already arranged to have the lawyers and bankers meet us on the ground floor. They will answer all the mortgage and legal questions you may have.
亲爱的顾客们，本公司已经安排律师及银行顾问在地下售楼处，他们会为阁下解答有关买卖手续及银行按揭贷款的问题。
Nearby, the ground floor of what used to be the Missions to Seamen building is now a restaurant with the curiously apt name of “Marcel”.
附近，曾经用来向海员派遣任务的建筑底层现在是一家餐厅，有个易引起好奇的名称“烫发”。

The center of the museum is open, so people can look up toward the roof or down toward the ground floor.
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。
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I mean, obviously you've got all the shops on the ground floor
显然地，所有的商店都在地面上。
皮卡迪利的公司员工 - SpeakingMax英语口语达人

O. headquarters, in Geneva, and installed in an obscure office on the ground floor.
NEWYORKER: Snacks for a Fat Planet

Theground floor of a building is the floor that is level or almost level with the ground outside.
If you get in on the ground floor, you become involved in a business or plan in the early stages, in order to gain an advantage.