The European Union主语
has drafted 谓语
a list of US products 宾语
to be hit with import taxes in retaliation for tariffs the United States has imposed on European steel.整个是to do形式的宾语补足语; 其中with import taxes 和in retaliation for 是两个介词短语,tariffs是介词短语in retaliation for 的宾语; 而the United States has imposed on European steel是一个定语从句,修饰tariffs
翻译
欧盟已经起草了一个要用进口税进行打击的美国产品的列表,从而报复美国加在欧洲钢铁工业上的关税