To "擦地" means to sweep the floor in Chinese. In English, you would say "to sweep the floor." The phrase likely comes from the physical motion of using a broom or other implement to push dirt or debris on the floor into a pile, which can then be easily picked up and disposed of. Here are some example sentences in English and their translations in Chinese:

"Can you please sweep the floor?" (你能擦地吗？)

"I swept the floor earlier today." (我今天早上擦过地了。)

"Sweeping the floor is an important part of keeping a clean home." (擦地是保持家庭清洁的重要一环。)