Class surveys indicate that the majority of Harvard alumni have shifted directions when it comes to their careers.

班级调查显示，大多数哈佛校友在职业生涯中已经改变了方向。

How are you? We're doing a class survey and I have to write emails to all my pen friends in other countries.

你好吗？我们在做课堂调查，我要给我在其他国家的笔友写封邮件。