求翻译：构词法是英语词汇学习的基本方法，通过对构词法的学习，可以将词汇进行分类，不仅有利于达到高效的硬性记忆，还可根据语境、词缀推测词义，加深对词汇的理解和认识，达到事半功倍的效果。结合商务英语词汇的基本特征，了解词汇的来源，识记特有的词缀及合成方法。商务英语构词方式主要有三种：合成，即两个或两个以上的词按照一定顺序排列构成新词；转化，即不改变词形，只变化词性，如名词和动词互换、形容词转化为名词等；派生，即通过加前缀、后缀改变词义派生新词。常见的前缀有anti(反、阻)派生出anti-dumpling(反倾销)。是什么意思？

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