春夏季节,同学们大多使用普通的塑料杯,有时想喝口温水,可杯里的水早就凉了;秋冬季节,同学们大多使用保温杯,上过体育课非常口渴,想痛饮一大口水,可保温杯里的水还有点烫。我们能不能设计一种水杯,让人们随时喝到温水呢?在大家共同努力下,我们画出了这种水杯的设计图,称这种水杯为易用型冷热杯。易 Spring and summer, most students use ordinary plastic cups, and sometimes want to drink mouth warm water, the glass of water has long been cool; autumn and winter seasons, most students use thermos cups, physical education was very thirsty, want to drink A drooling water can be a little hot in the mug. Can we design a glass to let people drink warm water at any time? With our joint efforts, we draw out the design of this glass and call it an easy-to-use hot and cold cup. easy