A tax on upstream carbon sources is one easy way to put a price on carbon emissions, although some countries may wish to use other methods, such as emissions trading schemes.

对上游碳资源征税是为碳排放定价的一种简单方法，尽管一些国家可能希望使用其他方法，例如碳排放交易计划。

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One such material is asphalt, a substance often placed on top of buildings and used to cover road surfaces.

VOA: special.2010.03.02

And one reason Bowman believes this is that we have such a difficult time in understanding other peoples and other cultures is that the very idea of defending one's honor has largely been devalued in the modern west.

鲍曼给出了一个理由,正是因为西方社会中,对维护荣誉的观念早已淡化,才导致他们对其他社会群体,和特定文化的不理解。

耶鲁公开课 - 政治哲学导论课程节选

The other one is a committed progenitor cell that now somehow has been changed in such a way that it's going to mature and develop into non-stem cells or the cells that make up our bodies, somatic cells.

而另一个子细胞就通过某种变化,成了定向的祖细胞,并将成熟和发育为非干细胞的细胞,就是构成我们身体的细胞,体细胞

耶鲁公开课 - 生物医学工程探索课程节选

This one is such a visual treat, with little details all over every scene and some really lovely lighting.

FORBES: Top 10 Best Animated And Puppeted Christmas Movies And Specials Of All Time

Which is why a week like the one just past is such a sobering reminder that we are always just an unanticipated disaster away from a trip into the primitive America that existed before.

CNN: Heat wave lesson: We take comfort for granted

One such is a black- and straw-colored, striped "Point Basket" (2011) by Jeremy Frey.

WSJ: Changing Hands | We Are Here! | Native, North American, New | By Lee Rosenbaum