树木的重要性主要体现在以下几个方面。
The importance of trees is mainly featured in following aspects.
不幸的是，我国不少地区的人们没有认识到树木的重要性。
Unfortunately, in many parts of our country, people haven't realized the importance of trees.
不幸的是，今天世界上很多地方人们没有意识到树木的重要性。
Unfortunately, nowadays in many parts of the world lots of people fail to realize the importance of trees.
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