The advantage of this is that now you have four binding sites for antigen instead of just two.

这样的好处是一个抗体上,有四个抗原结合位点而不仅仅是两个

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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

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