免费高清在什么上直播视频在线观看剧情介绍:下次给窗户涂上两层漆怎么样?coat /k??t/ n.(漆等的)层,涂层8 楼梯stair /ste?(r)/单数部落 一步楼梯 a stair一段楼梯 a flight of stair复数部落 两步楼梯 two stairs两段楼梯 two flights of stairsflight /fla?t/ n. 楼梯的一段会话急救包上楼梯 go up the stairsA:It was eleven at night. He went up the stairs an...