Thousands of students have taken part in demonstrations.

成千上万的学生参加了游行。

Lectures will be interspersed with practical demonstrations.

讲课中将不时插入实际示范。

The government responded by banning all future demonstrations.

政府的反应是今后禁止一切示威活动。

It is still not clear what events triggered off the demonstrations.

还不清楚是什么事件引发了示威。

Demonstrations, films, and videotapes are shown for your edification.

做这些示范和播放这些电影与录像带是为了启发你们。