Adequate food and shelter are the minimum prerequisites of a decent life.要过一种体面的生活，充足的食物和栖身之所是起码的前提条件。The money was given to the museum with the proviso that it is spent on operating costs.那笔钱提供给博物馆，前提条件是必须用于博物馆的营运。He accepted the job with one proviso: he would work alone.他接受了工作，前提条件是他要单独工作。