The Copenhagen conference was to come up with a binding agreement to succeed the 1997 Kyoto Protocol which mandated emissions cuts, but was not signed by some of the world's biggest polluters, including the United States.

VOA: standard.2009.12.08

So, now you have a single molecule, very large molecule, with not just two binding sites but with ten binding sites.

所以如果你体内有一个细胞,一个体积很大的细胞,细胞表面不只有两个抗原结合位点,而有十个抗原结合位点

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They make laws but the laws are not binding on anyone, they're just suggested laws or regulations.

他们编制法规,但是却没有强制意义,他们只是对法规或者监管进行建议

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