“我们可以使用脏水拖地”这句话用英语怎么翻译？？？

\u62d6\u5730 \u82f1\u8bed\u7ffb\u8bd1\u4e00\u4e0b

mop the floor

I help her to clean the floor.............................

We can use the used water to clean the floor.

we could use the used water to clean the floor

we can clean the floor with dirty water

鈥鎴戜滑鍙互浣跨敤鑴忔按鎷栧湴鈥杩欏彞璇鐢ㄨ嫳璇庝箞缈昏瘧???
绛旓細We can use the used water to clean the floor.

鈥鎴戜滑鍙互浣跨敤鑴忔按鎷栧湴鈥杩欏彞璇鐢ㄨ嫳璇庝箞缈昏瘧???
绛旓細鍥炵瓟锛歸e could use the used water to clean the floor