floor
单词辨析：
词义最广泛，可指各种事物的最底端部分。
Hold the bottom of the ladder for me, please!
请帮我扶住梯子下部！
Be careful! The bottom of the pool is very slippery.
小心！池底很滑。
So many fish live on the sea bottom.
生活在海底的鱼数量繁多。
指构成某物底部的一层，也指河、湖、海等的水底部分。
on the sea bed
在海底
the bed of a river
河床
All the child wants is the prawns on a bed of lettuce.
这个孩子只想吃铺在生菜上面的大虾。
The railway was built on a bed of solid rock.
铁路建在硬石地基上。
指海洋、山洞等的底，或建筑物中的地板、地面。
creatures living on the ocean floor
生活在海底的生物
the floor of a bridg
桥面
He left his books lying all over the floor.
他把书扔得满地都是。
相关例句：
The president is taking questions from the floor.
总统正接受来自听众席的提问。
She showed him around the ground floor of the empty house
她带他参观了这处空房子的底楼。
We painted the wooden floor with a white stain.
我们把木地板刷成了白色。
Only members would be given the floor.
只有会员才拥有发言权。
Ministers took the floor to denounce the decision to suspend constitutional rule
几位部长发言谴责暂停宪制的决定。
The happy couple and their respective parents took to the floor.
这对幸福的新人和他们各自的父母在舞池中翩翩起舞。