And, by the way, if you ever feel that you are in a compromising position, someone is pressuring you for information, just raise your hand and ask to be reseated.

另外，如果你觉得你在一个折中的位置，有人强迫看你的信息，只需要举起手来要求调换座位。

麻省理工公开课 - 固态化学导论课程节选

On the other hand, you don't have to withhold information that may be useful to the class.

另一方面,你又不能刻意保留对这门课有用的信息

耶鲁公开课 - 基础物理课程节选