请勿乘坐电梯 please do not take the elevator . 请勿乘坐电梯。 please take the stairs . 请走楼梯。 请勿乘坐电梯pleasedonottaketheelevator.请勿乘坐电梯。pleasetakethestairs. 请勿乘坐电梯pleasedonottaketheelevator.请勿乘坐电梯。pleasetakethestairs. 请勿乘坐电梯pleasedonottaketheelevator.请勿乘坐电梯。pleasetakethestairs. 请勿乘坐电梯pleasedonottaketheelevator.请勿乘坐电梯。pleasetakethestairs.