求翻译：中美课堂的不同。中国课堂上，学生不称呼老师的姓名、仔细听讲做笔记、举手发言。美国课堂上，学生面对面就坐、别叫放松可以喝饮料、自由谈论。是什么意思？

China and class differences. Chinese class, students address teachers by name, lecture notes, raise your hand to speak carefully. United States class, students sit down face to face, don't say to relax you can drink, free to talk about.