It should not be allowed to touch the ground or floor, nor to brush against objects.

不应该允许它接触地面或地板，以及与物体摩擦。

youdao

He could not tell whether the floor was wood or stone.

他分不清这地板是木头的还是石头的。

《柯林斯英汉双解大词典》

The boy did not like to mop the floor, but he made the best of it.

这男孩不喜欢拖地板，但他还是尽量干得好。

youdao

Then when he was not looking, I dropped one of my gloves on the floor under my chair.

VOA: special.2009.12.26

Everybody's going to put the cup down and assumes it's going to stay there but not fall to the floor.

每个人放下杯子时,都会假设杯子会稳稳地搁在那里,而不是掉在地上。

普林斯顿公开课 - 人性课程节选

Weep no more, woeful Shepherds weep no more For Lycidas your sorrow is not dead, Sunk though he be beneath the wat'ry floor, So sinks the day-star in the Ocean bed, And yet anon repairs his drooping head.

诗歌大意：，悲伤的牧羊人们不要再哭泣,利西亚斯并没有死去，虽然他被海水吞没，启明星也会沉入海底，不久便会修复他疲惫的头颅。

耶鲁公开课 - 弥尔顿课程节选

So it is not a floor, not a cap.

WHITEHOUSE: Press Briefing on BP Oil Spill

It is not a floor, it is not a ceiling, but what this gives us is the assurances so that we can make sure that the people, the small businesses that have been impacted can get their claims paid in a timely manner.

WHITEHOUSE: Press Briefing on BP Oil Spill

By law, the president must resubmit nominations that did not receive floor action in the previous session of Congress.

CNN: Obama judicial nominees likely to reignite controversy