一名志愿者称：“我认为很有必要推进这样的项目。”
One volunteer said, "I think it is necessary to promote such programs."
我认为每本书开头的简短介绍都是很有必要的。
I think at the beginning of each book a brief introduction to it is necessary.
你可以从中汲取适合你的，其实我认为大家都会从中找到适合自己的方法，但是我认为所有这些都很有必要分享。
Take from them what you will — everyone will find different things that work for them, but I think just about all of them are important to share.
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