英语翻译假如你陪同你们学校的外籍老师Mr.Green去某音乐厅听音乐,在门口的布告栏,看见一张【观众须知】外籍老师不懂中文,请你用英语告诉他有关内容,内容如下：一人一张票,凭票入场场内禁止抽烟食品和饮料不准带进演出时不准拍照演出时不能用手机应提前20分钟入场60至80词

Mr. Green, it is a notice to the audience. It says that we should enter the concert hall 30 minutes
earlier before the concert starts. Entrance to the hall is by ticket only, each one each ticket. As a rule,
food or drink should not be taken into the hall .Of course, smoking is not allowed in the hall either.
Please don't bring your digital cameras with you because no photos can be taken during the concert.
And what is more, mobile phones must be kept off during the concert.