Discussing and expounding this problem has not only profound academic significance, but also positive practical significance.

对这一问题的探讨和阐发不仅具有深刻的理论意义，同时也具有积极的现实意义。

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We need an acknowledgement of our present ecological plight but also a language of positive change, visions of a better future.

我们需要承认我们目前的生态困境，但也需要一种积极改变的态度，拥有对更美好的未来的愿景。

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A positive learning attitude can not only improve the quality of study but also lay a good foundation for lifelong learning.

积极的学习态度不仅能提高学习的质量，而且能为终身学习打下良好的基础。

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So, what this means is that when we're looking at an actual wave function, we're treating it as a wave, right, so waves can have both magnitude, but they can also have a direction, so they can be either positive or negative.

这意味着,当我们看一个波函数时,我们把它看做一个波，波不仅有幅值，还有方向，所以它们可正可负，如果。

麻省理工公开课 - 化学原理课程节选

The two analogies we use " was strengthening our immune system or stronger "psychological engine" that has the capacity to endure more not just from the negative to zero, but also from the zero to the positive.

我们使用的两个类比,是加强我们的免役系统或加强“心理引擎“,获得更强大的忍受能力,不只是从负到零，还要从零到正。

哈佛公开课 - 幸福课课程节选

And also we are able to tap into the expertise of professors, not just at the University of Pennsylvania, but also at other schools as well so that we can bring in the very top leading researchers and practitioners of positive psychology.

我们还聘请多位教授，不局限于宾州大学，还有其他大学,我们请来最杰出的研究员,和积极心理学的从业者。

哈佛公开课 - 幸福课课程节选

It will contain the same sorts of prohibitions but also positive requirements, such as undergoing treatment for drugs.

ECONOMIST: Some new tools for fighting yobs, and fresh questions

She admits she is still shocked by the level of social deprivation in the south Wales valleys, but also positive of plans and potential investment within them.

BBC: Barbara Wilding out at work

Again, the purpose of the jobs act is to have the most immediate near-term impact, and near-term certainly means both 2012 and 2013, but also positive job impact in the future.

WHITEHOUSE: Press Briefing