它还让盖子可以折起来，便于出门携带；也可以摇身变成一块黑板架，或者搁在汽车的方向盘上。
It also allows the lid to fold up for travel and can be converted into a an easel or sit on a car's steering wheel.
里面有一架旧钢琴，琴键都冻住了，黑板前面有一张桌子。
It contained an old piano, its keys frozen by time, and a lone desk in front of a chalkboard.
银幕卷筒、卡片架卷筒固定在黑板上方，图片夹固定在黑板的上框上。
The screen reel drum and the card-shelf reel drum are fixed above the blackboard, and the picture clip is fixed on the upper frame of the blackboard;
银幕卷筒、卡片架卷筒固定在黑板上方，图片夹固定在黑板的上框上。
The screen reel drum and the card-shelf reel drum are fixed above the blackboard, and the picture clip is fixed on the upper frame of the blackboard;
应用推荐