一棵树的历史是从在森林里开始到被运出国外使用，多种情况下，将是一个有趣的而且令人兴奋的故事。
The history of a tree form the time it starts in the forest until the boards which it yields are used, would form an interesting and, in many instances, an exciting story.
发明东西是有趣和令人兴奋的，而且每个人都能成为发明家。你想成为发明家吗？
Inventing is interesting and exciting and everyone can be an inventor. Do you want to be an inventor?
会议议程令人兴奋，而且非常及时，你们将集中讨论极为迫切和重要的实际问题。
You have an exciting and extremely timely agenda, focused on practical problems of burning importance.
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