dimethylglycineWiktionary 原文英美构词拆解didi-前缀methylmethyl-前缀glycineglycine词干di-Two. · Double, twice the quantity.methyl-(organic chemistry) Used to form terms describing the attachment of a methyl group词源说明From di- + methyl- + glycine.释义名词noun1(organic chemistry) A derivative of glycine in which both hydrogen atoms of the amino group are replaced by methyl groups