"In a single generation, we've fallen from first place to twelfth place in college graduation rates for young adults.
VOA: special.2010.08.12
OK, so now the question is, how do we know the first place that this is a suitable reductant?
好的,现在的问题是,我们如何能知道第一步中,镁是一个合适的还原剂?
In the first place, it's important that we avoid, I think, two equally unhelpful ways of responding to this.
首先很重要的是,我们要避免,我认为的两种同样无益的解析方式。
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