Any of a group of organic compounds of nitrogen, such as ethylamine, C2H5NH2, that may be considered ammonia derivatives in which one or more hydrogen atoms have been replaced by a hydrocarbon radical.是什么意思_Any of a group of organic compounds of nitrogen, such as ethylamine, C2H5NH2, that may be considered ammonia derivatives in which one or more hydrogen atoms have been replaced by a hydrocarbon radical.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句