总是有数不尽的有趣话题，老师也乐于参与。
There are always interesting topics and teachers love to participate.
这样的课堂气氛活跃，所有的学生都乐于参与。
The atmosphere is lively and all the children love to join in.
但近期法国选举表明，只有真正的竞选，人们才会乐于参与。
As the recent turn-out in the French election shows: give people a real contest and they will come out and vote.
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