adjunct
noun [ C ] uk/ˈædʒ.ʌŋkt/ us/ˈædʒ.ʌŋkt/
(SOMETHING ADDED)
formal附属物；附件
something added or connected to a larger or more important thing
I hoped I would find the computer course a useful adjunct to my other studies. 我希望学了这门计算机课程后，会使其他科目的学习如虎添翼。
(GRAMMAR)
language specialized修饰成分（语法中指在句子中提供附加信息的副词或者副词短语）
In grammar, an adjunct is an adverb or phrase that gives extra information in a sentence.