bathrooms
A bathroom is a room in a house that contains a bath or shower, a sink, and sometimes a toilet.
go to the bathroom
People say that they are going to the bathroom when they want to say that they are going to use the toilet.
Although he had been treated with antibiotics, he went to the bathroom repeatedly.
尽管已经用抗生素治疗过了,他还是频繁地去洗手间。