But now executive secretary of the U.N.Framework Convention on Climate Change Yvo de Boer says any decision taken next month in Copenhagen will instead be "morally binding."

VOA: standard.2009.11.06

But still, he considers justice grounded on utility to be what he calls "the chief part and incomparably, the most sacred and binding part of all morality."

但是他依然把基于功利的公正称为,所有道德的主体,最无与伦比，最神圣，最有约束力的部分“

耶鲁公开课 - 公正课程节选

Well, one way to think about is they have more antigen binding sites and so they're going to be more efficient at neutralizing the pathogen on a per-molecule basis than IgG is.

可以这么考虑,因为IgM表面有更多的抗原结合位点,所以相对于IgG,IgM在分子层面上,能够更为有效地与病原体结合

耶鲁公开课 - 生物医学工程探索课程节选