译林英语六年级上册第五单元单词sing 标识;shopping center 购物中心;careful 小心,当心;What does it mean?这是什么意思?mean 意思是;floor 地面;litter 乱扔垃圾;go in进入,走进;take ... into带入;restaurant 饭店,餐厅;someone某人;smoke吸烟;抽烟;smell闻到;No eating or drinking.请勿饮食。No littering.请勿乱扔垃圾。No parking.请勿停车。No smoking.请勿吸烟。Danger!危险!Wet floor.小心地滑。outing 外出游玩,远足;walk on 继续走路;around 在……周围。本单元单词重点识各种标识,和问标识的意思是什么的重点句:What does it mean?对它的回答是:It means...