骑自行车...

Are you tying to torture yourselves riding bikes in such hot weather?这麽热的天气骑脚踏车,你们是不是在折磨自己?Riding bikes not ordy contributes to keeping fit, also produces no pollutants.骑车不仅有益于保持健康, 而且无污染.Painting, drawing, flying kites,...

riding bikes的音标：...